Razer DeathAdder V4 Pro Ultra-Lightweight Wireless Ergonomic Esports Mouse is a high-performance gaming mouse designed for competitive play with precision control, low latency wireless performance, and ergonomic comfort. It delivers responsive tracking and stable connectivity for esports-level gameplay. First, it features an ultra-lightweight ergonomic design that supports fast and controlled movements. As a result, users can maintain accuracy while reducing fatigue during long gaming sessions. In addition, it uses a high-precision optical sensor for accurate tracking and consistent cursor control. Therefore, players can achieve reliable aim performance in competitive games. Moreover, it supports ultra-low latency wireless connectivity for stable and responsive input during gameplay. Furthermore, it includes programmable buttons that allow users to customize commands and macros for different gaming styles. Finally, the ergonomic right-handed shape is designed for long-term comfort and improved control in extended gaming sessions. Specifications: Ultra-lightweight ergonomic gaming mouse design High-precision optical sensor for accurate tracking Ultra-low latency wireless connectivity Programmable buttons for custom controls Ergonomic right-handed shape for comfort RZ01-05330100-R3G1 , RZ01-05330200-R3G1 , RZ01-05330300-R3M1
Genuine Apple MacBook Pro 15" (A1707) LCD display assembly in Space Gray—professionally removed from original units and tested for full functionality. Ideal for high-quality repairs with OEM clarity and color accuracy. Genuine Apple MacBook Pro 15″ (A1707) LCD display assembly in Space Gray—professionally removed from original units and tested for full functionality. Ideal for high-quality repairs with OEM clarity and color accuracy. Model Compatibility: Designed exclusively for MacBook Pro 15-inch (2016–2017 models, A1707). Original Apple Display: Not a third-party or replica—this is an authentic Apple Retina display assembly carefully pulled from verified MacBook Pro units. Retina Display Quality: 15.4-inch LED-backlit screen with 2880 x 1800 resolution, P3 wide color gamut, and True Tone support (if originally equipped) for vibrant, true-to-life visuals. Complete Assembly Included: Comes with LCD panel, front glass, integrated FaceTime HD camera, ambient light sensor, and full bezel—ready for direct installation. Space Gray Finish: Matches the original Space Gray MacBook Pro chassis for seamless aesthetic integration. Professionally Inspected: Each unit is tested for dead pixels, backlight uniformity, discoloration, and physical integrity to ensure reliable performance. “Pulled” Condition: Removed from a genuine, used MacBook Pro—fully functional with OEM performance, but not brand new. No cracks or major blemishes. Ideal for Repair Professionals: Trusted by technicians and refurbishers who require factory-level display quality and compatibility.
Premium bilingual keyboard replacement for MacBook Pro 13″ (A1278, 2009–2012) — choose US/Arabic or UK/Arabic layout. Features durable scissor-switch keys, OEM fit, and clear dual-language legends for seamless typing in English and Arabic. Compatible With: MacBook Pro 13-inch (Model A1278) from Late 2009, Mid 2010, Early 2011, and Mid 2012 (Model Identifiers: MacBookPro5,5, 6,2, 8,1) Layout Options (select at purchase): US/Arabic: Primary legends in Arabic, secondary (top-left) in US QWERTY — includes @, #, and standard US symbols. UK/Arabic: Primary legends in Arabic, secondary in UK QWERTY — includes £ symbol, taller Enter key, and UK-specific punctuation. Both versions feature full Arabic character set US/Arabic: Primary legends in Arabic, secondary (top-left) in US QWERTY — includes @, #, and standard US symbols. UK/Arabic: Primary legends in Arabic, secondary in UK QWERTY — includes £ symbol, taller Enter key, and UK-specific punctuation. Both versions feature full Arabic character set Keyboard Type: Traditional scissor-switch mechanism—reliable, tactile, and serviceable (pre-Butterfly design). Backlighting: Included on Early 2011 and Mid 2012 models only. Keycaps are translucent for even lighting. (Note: Late 2009 & Mid 2010 A1278 models did not support backlighting—keyboard will still function, but lighting requires compatible hardware.) Build & Fit: Precision-molded frame with correct screw mounts and alignment pegs—ensures flush, secure installation in the original top case with no rattling. Installation: Keyboard is screw-mounted (no adhesive)—one of the most DIY-friendly MacBook keyboards. Requires top case access and battery disconnect. Suitable for intermediate users or professionals.
ASUS VG278QR Gaming Monitor 27inch 27 inch Full HD gaming monitor with an ultra-fast 165Hz refresh rate and Adaptive-Sync technology to eliminate screen tearing and choppy frame rates Certified as G-SYNC Compatible, FreeSync Premium technology delivering a seamless, tear-free gaming experience by enabling VRR (variable refresh rate) by default. 0.5ms* response time for smooth gameplay, and ASUS Extreme Low Motion Blur (ELMB) Technology to further reduce ghosting and motion blur GameFast Input Technology minimizes input lag and provides much faster motion delivery from end devices to monitor ASUS-exclusive GamePlus hotkey for in-game enhancements while GameVisual for optimized visuals Supports both Adaptive-Sync with NVIDIA GeForce* graphics cards and FreeSync with AMD Radeon graphics cards *Compatible with NVIDIA GeForce GTX 10 series, GTX 16 series, RTX 20 series and newer graphics cards
The Jungle Leopard K400 Pro Air Cooler delivers strong cooling for your processor. It helps your system stay cool during long gaming or work sessions. The cooler uses a powerful heatsink design that improves heat flow. This keeps your PC stable under heavy load. Moreover, the Jungle Leopard Air Cooler includes a high-performance fan. The fan moves air efficiently through the fins. It stays quiet while offering strong airflow. This gives you better performance without loud noise. In addition, the cooler uses high-quality materials for better durability. The heat pipes transfer heat quickly and evenly. This helps your processor maintain lower temperatures. It also increases the lifetime of your system. Furthermore, the Jungle Leopard K400 Pro Air Cooler features ARGB lighting for a stylish look. You can customize the lighting to match your setup. The bright colors add life and personality to your gaming build. This makes your PC look modern and clean. Also, the cooler supports many modern processors. It works well with gaming PCs, office builds, and editing systems. The installation process is simple and user-friendly. This makes it a great choice for beginners and experienced builders. The compact design of the Jungle Leopard K400 Pro Air Cooler fits in many cases. It provides strong cooling without taking too much space. This makes it ideal for mid-size and small builds. It keeps your system neat and organized. Overall, the Jungle Leopard K400 Pro Air Cooler offers strong cooling, quiet performance, and modern style. It helps your PC stay cool and run smoothly. It is a reliable option for people who need steady performance. This cooler is perfect for gamers, creators, and everyday users.
The Brother DCP‑T820DW Ink Tank Printer delivers high-quality printing, scanning, and copying in a compact, all-in-one design. It is ideal for home, office, and small business use, providing sharp black-and-white and vibrant color prints. Moreover, its refillable ink tank system reduces printing costs while allowing high-volume printing without frequent replacements. This printer features fast, reliable output with duplex (double-sided) printing to save paper and improve efficiency. The visible ink tanks make it easy to monitor ink levels, preventing interruptions during important print jobs. Additionally, it supports wireless and mobile printing, enabling users to print directly from smartphones, tablets, and laptops. The DCP‑T820DW is perfect for professionals, students, and home users who need versatile, cost-effective, and reliable printing. Furthermore, its compact footprint fits neatly in any workspace, combining convenience with performance. Finally, this all-in-one printer provides long-lasting, high-quality output for everyday printing, scanning, and copying needs. Specifications: Brother DCP‑T820DW ink tank printer Print, scan, and copy in one device Refillable ink tanks for low-cost printing Duplex printing for efficiency and paper savings Wireless and mobile printing compatible
Introducing the Thermaltake TH420 ARGB liquid cooler, a must-have for gamers and PC enthusiasts. This innovative cooling solution ensures optimal performance while adding a touch of vibrant lighting to your setup. With its advanced technology, the TH420 ARGB provides superior cooling for your CPU, keeping temperatures low even during intense gaming sessions. Say goodbye to overheating and hello to smoother performance. What sets the TH420 ARGB apart is its eye-catching ARGB lighting. Customize your rig with dazzling colors and effects, adding a new dimension to your gaming experience. Stand out from the crowd with dynamic lighting that reflects your style. Installation is a breeze with the TH420 ARGB’s user-friendly design. With its universal compatibility and easy-to-follow instructions, you’ll have your cooler up and running in no time. Say goodbye to complicated setups and hello to hassle-free cooling. Moreover, the TH420 ARGB is built to last, with high-quality materials and reliable performance. Trust Thermaltake to deliver durability and efficiency, ensuring your PC stays cool and responsive for years to come. In conclusion, the Thermaltake TH420 ARGB liquid cooler is the perfect choice for gamers and enthusiasts seeking top-notch cooling performance with stunning ARGB lighting. Upgrade your PC today and unleash the full potential of your gaming rig! Specifications: Dimensions : 140 x 140 x 25 mm Speed : 500 ~ 1800 R.P.M Air Flow : 84.32 CFM Pressure : 3.02 mm-H2O Pump Speed : 3200RPM
The NZXT T120 RGB CPU Air Cooler blends strong cooling with sleek design and vibrant RGB lighting. It fits Intel (115x, 1200, 1700) and AMD (AM4, AM5) sockets out of the box. With four copper heat pipes, it efficiently transfers heat from your CPU. Moreover, the aluminum heat-pipe cover looks clean and hides copper piping. The single 120 mm F120 RGB fan shows bright, customizable lighting via NZXT CAM. Also, PWM control adjusts fan speed between 500 and 1800 RPM for quiet or active cooling. Noise levels stay low—from 17.2 to 27.5 dBA—even under load. Plus, its slim design allows more space for RAM and optional back exhaust fans. It includes high-performance thermal paste and full mounting kits for easy setup. Because of direct-contact cooling, it cools nearly as well as larger coolers. Users report solid performance on Ryzen 7 and Core i7 CPUs under heavy load. Also, installation takes under ten minutes with clear instructions . Many reviewers note it outperforms stock coolers and offers great value. Some users say fan noise rises under load but stays unobtrusive. Reddit users praise cooling performance for CPUs up to Ryzen 5 7600X. However, some note RGB setup may need NZXT controller for full lighting. Overall, the NZXT T120 RGB CPU Air Cooler is a compact, efficient, and visually appealing cooler. It suits gamers, creators, and modders who want style without sacrificing performance. In short, this cooler delivers solid thermal results with bright RGB and easy mounting. Choose it to bring cooling power and flair to your PC build. Specifications: Voltage: 12V Wattage: 120W Cooling Method: Fan Compatible Devices: Desktop Noise Level: 32 dB Material: Aluminum, Copper Max Rotational Speed: 2500 RPM Airflow Capacity: 21.67 CFM
Looking for a reliable and affordable laptop? Enter the Lenovo V15 G4 IRU, a versatile device designed to meet your everyday computing needs without breaking the bank. First and foremost, the Lenovo V15 G4 boasts a sleek and compact design, making it the perfect on-the-go companion for work or study. Its lightweight build ensures easy portability. Equipped with a powerful processor, this laptop ensures smooth multitasking. Switch effortlessly between applications, enhancing your productivity and making your computing experience hassle-free. The V15 G4’s vibrant and crisp display brings your content to life. Whether you’re watching videos, browsing the web, or working on documents, the visuals are clear and immersive, providing an enjoyable viewing experience. Furthermore experience fast and reliable connectivity with the V15 G4’s advanced Wi-Fi capabilities. Stay connected to the internet seamlessly, ensuring you can access information and stay in touch effortlessly. Moreover concerned about storage? Fear not! The Lenovo V15 G4 offers ample storage space for your documents, photos, and videos. Enjoy the convenience of having all your files at your fingertips. With a user-friendly interface, even those new to laptops will find the Lenovo V15 G4 easy to navigate. The intuitive design and responsive keyboard enhance your overall user experience. In summary, the Lenovo V15 G4 is not just a laptop; it’s your affordable tech companion. From its sleek design to powerful performance, this budget-friendly device ensures you get the most out of your computing experience. Upgrade to efficiency with the Lenovo V15 G4 today! Specifications: CPU : Intel Core i5-13420H RAM : 8GB Storage : 256GB SSD NVMe GPU : Intel UHD OS : No OS Screen : 15.6″ FHD (1920×1080) TN Color : Business Black Part Number : 83A1009DED
The Xigmatek TITAN 1200W Platinum 80 PLUS Power Supply EN40580 is a high-performance ATX PSU designed for enthusiast gaming systems, workstations, and high-power PC configurations. It delivers up to 1200W of continuous power output for demanding hardware setups. In addition, the unit is certified with 80 PLUS Platinum efficiency. Therefore, it achieves high power conversion efficiency and reduced energy loss under load. Moreover, it uses a single +12V rail design to support modern CPUs and graphics cards. As a result, it can provide stable power delivery for high-end components. The PSU includes an integrated cooling fan for thermal management. In addition, it features built-in safety protections to help protect connected hardware from electrical faults. Finally, the Xigmatek TITAN 1200W is designed for users who require high-capacity power delivery with Platinum-rated efficiency. Specifications: Power Output: 1200W Efficiency Rating: 80 PLUS Platinum Form Factor: ATX Cooling: Integrated fan Single +12V rail design
The HP Laptop 15-fd0024ne is designed to handle daily tasks with ease and speed. It features a powerful Intel Core i7 processor that keeps everything running smoothly. Whether you’re working, browsing, or streaming, this laptop can keep up. With 8GB of RAM, switching between apps is quick and smooth. The 512GB SSD offers fast storage, so your laptop starts up in seconds. You also get plenty of space for your documents, photos, and videos. The 15.6-inch Full HD screen shows sharp and clear images. It uses anti-glare technology, which means it looks great even in bright rooms. Whether you’re watching a movie or working on a project, the display won’t disappoint. Despite its strong performance, this laptop is light and easy to carry. It weighs just 1.59 kg, making it perfect for students or professionals on the go. The slim design fits easily in a bag and looks modern and stylish. It comes with FreeDOS, so you can install the operating system you prefer. The battery can last up to 7 hours and 45 minutes, which means less time charging and more time getting things done. If you want a fast, reliable laptop that’s perfect for work, study, and entertainment, the HP Laptop 15-fd0024ne is a smart choice. Check other options here! Specifications: CPU : Intel Core i7-1355U RAM : 8GB Storage : 512GB SSD NVMe GPU : Intel Iris Xe OS : No OS Screen : 15.6″ FHD (1920 x 1080) Part Number : 91W39EA
JBL PartyBox 110 Portable Party Speaker is a powerful Bluetooth speaker designed for parties and events. It delivers strong sound with deep bass and dynamic lighting. It produces JBL Original Pro Sound with adjustable bass levels. As a result, it delivers clear and powerful audio both indoors and outdoors. The JBL PartyBox 110 Portable Party Speaker includes a dynamic light show. In addition, the lights sync with the music to create a full party atmosphere. It offers up to 12 hours of battery life. Therefore, it supports long events without frequent charging. It features an IPX4 splashproof design. Thus, it works well near pools or outdoor environments. It also includes microphone and guitar inputs. Moreover, you can use it for karaoke or live performance. Specifications: 160W JBL Original Pro Sound with adjustable bass Dynamic LED lightshow synced with music Up to 12 hours battery life for long playback IPX4 splashproof design for outdoor use Microphone and guitar inputs for karaoke and live audio
P3255DN Printer Speed 33 ppm (A4) / 35 ppm (Letter),Resolution 1,200×600dpi, Automatic Duplex, Network, Hi-Speed USB 2.0, 128MB Memory, 50,000 pages Duty Cycle
DarkFlash DS900 Aquarium ATX PC Case Black The DarkFlash DS900 Aquarium Black case embodies both style and performance, providing ample space, exceptional airflow, and striking aesthetics for your PC build. With its spacious interior and optimized airflow design, this case ensures efficient cooling allowing your components to perform at their best while maintaining a sleek and elegant appearance. Featuring a modern and minimalist black design, this case not only enhances your build’s aesthetics but also offers functionality with its ample room for high-end components and cable management. PC enthusiasts and builders seeking a blend of style and functionality eagerly anticipate the DS900 Aquarium Black for its combination of visual appeal and practicality in creating an impressive PC build. The DarkFlash DS900 Aquarium Black case merges style and performance, offering ample space, exceptional airflow, and striking aesthetics. Don’t miss out on this case that can elevate the look and functionality of your PC build Specifications: 270 degree Panoramic design without barrier Support up to 10 fans and 360mm radiator Full coverage dust proof USB Type-C Included
The PANPOWER Online UPS 3000 VA is designed to provide reliable power protection for computers, workstations, networking equipment, office devices, and other sensitive electronics. It helps maintain stable operation during power interruptions, voltage fluctuations, and unstable electrical conditions. With a 3000VA capacity and 2100W output power, this UPS provides dependable backup power for professional and small business environments. Additionally, it delivers pure sine wave output to provide clean and stable power for connected equipment. The UPS features an online interactive design with Automatic Voltage Regulation (AVR) to help maintain consistent output voltage. Moreover, its wide input range allows reliable operation in environments with changing power conditions. The PANPOWER Online UPS 3000 VA includes a smart battery charging system designed to optimize battery performance. Furthermore, it supports compatibility with mains power and generator input for flexible installation options. Protection features help safeguard connected devices against overload, short circuits, input power issues, and battery-related problems. Therefore, it is suitable for protecting important equipment such as computers, office systems, printers, and CCTV devices. The UPS includes an LCD display for monitoring system status and operating information. In addition, communication options including USB, RS232, and optional SNMP support allow easier monitoring and management. The PANPOWER Online UPS 3000 VA combines stable power delivery, reliable backup performance, and advanced protection features in a practical solution. As a result, it provides dependable power support for users who require continuous equipment operation. Manufacturer link Specifications: Capacity: 3000VA / 2100W UPS Type: Online Interactive UPS Output Waveform: Pure Sine Wave Communication: USB, RS232, Optional SNMP Display: LCD Status Display
The HP M27ha monitor is an affordable option offering optimal screen performance. Firstly the hp M27HA lets you see crisp images and built-in audio to enjoy clear sound. Designed so you can navigate comfortably with HP Blue Light mode, adjustable tilt settings and 3-sided micro edge bezel. Get clear crisp picture quality on the FHD resolution monitor with IPS panel and ultra-wide viewing angles. therefore With the added benefit of Low Blue Light software for increased eye comfort. HP M27ha monitor is Designed to let you see your content comfortably. secondly Find your best view with full function adjustability, a 3-sided micro-edge bezels for unlimited sightlines and virtually seamless multi-display setups[1] plus VESA mounting capability[2]. Fully integrated audio experience. Work and play on one device. Enjoy all your multimedia with a monitor that has convenient stereo audio right on the display for a fully integrated audio experience. Share the panoramic view Crisp picture quality and eye comfort with IPS panel, ultra-wide angles and Low Blue Light. Work comfortably with height adjustable stand and micro edge bezels. Convenient stereo audio for a fully integrated listening experience. you can always check here and if you like to see more options you can always check here! Specifications: Specs Screen size. 68.58 cm (27) Resolution (native) FHD (1920 x 1080) Display type. IPS. Response time. 5ms GtG (with overdrive) Display Input Type. 1 VGA; 1 DisplayPort™ 1.4; 1 HDMI 1.4. Display features. On-screen controls; Pivot rotation; Low blue light mode; Dual speakers (2W per channel); Anti-glare. 1 year warranty
BUEROTIKA BP111L Label Printer is a direct thermal printer designed for barcode and label printing applications. BUEROTIKA Label Printer BP111L supports fast label output for retail, warehouse, office, and POS environments. It uses direct thermal technology, so it does not require ink or toner during operation. Additionally, the printer delivers 203 DPI print resolution for clear barcode and label printing. Moreover, it supports label widths from 20 mm to 80 mm, which improves compatibility with different label formats. The maximum printing speed reaches 150 mm/s for faster workflow performance. The BUEROTIKA BP111L Label Printer includes USB and RJ11 connectivity for standard integration with POS systems and computers. Therefore, it works well for shipping labels, inventory management, barcode printing, and retail operations. Its compact structure also supports installation in smaller workspaces. Additionally, the printer focuses on low-maintenance operation because direct thermal printing removes the need for ink replacement. It also supports everyday business use with a durable design and simple setup process. BUEROTIKA Label Printer BP111L provides practical label printing performance for commercial and office environments. Specifications: Direct thermal printing technology 203 DPI print resolution Up to 150 mm/s print speed Supports 20 mm to 80 mm labels USB and RJ11 connectivity interfaces
The Synology Enterprise Series 2.5″ SATA SSD 480GB is an ideal solution for businesses needing reliable and high-performance storage. This SSD offers enhanced speed and durability for all your data storage needs. With its impressive 480GB capacity, the Synology Enterprise Series SSD ensures you have ample space for important files and applications. It supports demanding workloads with ease, boosting overall productivity. The Synology Enterprise Series SSD delivers exceptional read and write speeds, significantly improving system performance. Whether you’re handling large files or running intensive applications, this SSD ensures smooth and efficient operations. Installation is simple and straightforward. The Synology Enterprise Series SSD fits perfectly into any standard 2.5″ SATA slot, making it compatible with a wide range of systems and devices. This SSD is designed with endurance and reliability in mind. It offers a high Total Bytes Written (TBW) rating, ensuring long-lasting performance and stability for your critical business applications. In addition to its robust performance, the Synology Enterprise Series SSD features advanced error correction and power loss protection. These features safeguard your data against corruption and power failures, providing peace of mind. The Synology 2.5″ SATA SSD 480GB also boasts low power consumption. This helps in reducing overall energy costs while maintaining high performance, making it an efficient choice for businesses. In summary, the Synology Enterprise Series 2.5″ SATA SSD 480GB is a powerful and reliable storage solution. It enhances your business performance with its speed, durability, and efficiency. Upgrade your storage today and experience the difference with Synology. Specifications: Capacity : 480GB Form Factor : 2.5″ Interface : SATA 6 Gb/s Sequential Read : 530 MB/s Sequential Write : 430 MB/s Random Read : 96,000 IOPS Random Write : 41,000 IOPS
Looking for the perfect portable speaker to enhance your music experience? Look no further than the Monster S310 SuperStar Bluetooth Speaker. With its compact size and powerful sound, it’s the ideal companion for all your adventures. Experience crystal-clear audio quality wherever you go. Whether you’re at home, in the park, or on the beach, the Monster S310 delivers immersive sound that fills any space with rich, dynamic sound. With Bluetooth connectivity, streaming your favorite music is effortless. Simply pair your device with the speaker and enjoy wireless freedom. Say goodbye to tangled cords and hello to seamless connectivity. Not only does the Monster S310 deliver exceptional sound, but it also boasts a sleek and stylish design. Its compact and portable design makes it easy to take with you wherever you go, while its modern aesthetic adds a touch of elegance to any setting. The Monster S310 SuperStar Bluetooth Speaker is designed for convenience and versatility. With its built-in microphone, you can easily take calls hands-free. Plus, its long-lasting battery ensures hours of uninterrupted music playback. Whether you’re hosting a party, relaxing at home, or on the go, the Monster S310 SuperStar Bluetooth Speaker is the perfect audio companion. Elevate your music experience and immerse yourself in sound like never before. Specifications: Bluetooth 4.2V Speaker unit: 2″*2+ passive radiator Output power: 8W+8W Battery: 3.7V/4000mAh Working time: 12 hours (50% volume) Input: 5V/1A Bluetooth range: 10 meters Product size: 165*85*85mm 20H Play Time at 50% volume IPX5
NZXT Function Elite MiniTKL Gaming Keyboard is a compact premium keyboard designed for competitive gaming and fast response. It uses advanced magnetic switch technology for precise and customizable keystrokes. NZXT Function Elite MiniTKL offers high-speed performance with a refined typing feel. In addition, it features NZXT magnetic switches with Hall effect sensors for accurate input tracking. It also supports adjustable actuation across a range of 0.6 mm to 4.0 mm per key. Moreover, it includes Rapid Trigger and Snap Overrides for faster repeated inputs and improved control. Furthermore, it supports up to 8000 Hz polling rate for ultra-low latency performance. It also uses double-shot PBT keycaps and a durable aluminum construction for long-term use. In addition, it includes a gasket-mounted design with sound-dampening layers for smoother typing acoustics. In addition, it features per-key RGB lighting and a 45-LED perimeter lighting system. It also allows full customization through NZXT CAM software for lighting and key settings. This improves both visual setup and control flexibility. Finally, it uses a MiniTKL layout without a numpad to save desk space while keeping essential keys. NZXT Function Elite MiniTKL delivers strong gaming performance with advanced customization and compact design. Specifications: Magnetic switches with adjustable actuation (0.6–4.0 mm) Rapid Trigger and Snap Overrides gaming features 8000 Hz polling rate for ultra-low latency Double-shot PBT keycaps with aluminum build Per-key RGB lighting with 45-LED perimeter system
