The Samsung 75″ Crystal UHD U8000F 4K Smart TV UA75U8000FUXTW uses a 75-inch LCD panel with 3840 × 2160 resolution. It is a basic 4K TV focused on screen size, standard image processing, and everyday smart features. It uses the Crystal Processor 4K for image processing and upscaling. This system converts lower-resolution content into closer-to-4K output. It also supports HDR10 and HDR10+, which adjust contrast between bright and dark areas for compatible content. The panel runs at a native 60 Hz refresh rate. Motion Xcelerator is included to reduce blur during fast scenes such as sports and gaming. Samsung Tizen OS powers the smart platform. It provides access to streaming apps, web browsing, and SmartThings connectivity. It also supports voice control depending on region and setup. Connectivity includes HDMI ports, USB ports, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. It supports Auto Low Latency Mode (ALLM) for basic console gaming. This model does not include local dimming or advanced display systems. It focuses on standard 4K performance and basic smart TV functionality for general use. Specifications: 75-inch LCD panel with 3840 × 2160 (4K UHD) resolution Crystal Processor 4K with 4K upscaling support HDR10 and HDR10+ compatibility 60 Hz native refresh rate with Motion Xcelerator Tizen OS with HDMI, USB, Wi-Fi, Bluetooth, Ethernet connectivity
Laptop Battery for Acer AS10D31 AS10D51 Aspir 4741 5253 5251 5336 5349 5551 5552 5560 5733 5733Z TravelMate 5740 5735 5735Z 5740G Gateway NV55C NV50A NV53A NV59C Laptop Battery for Acer AS10D31 AS10D51 Aspir 4741 5253 5251 5336 5349 5551 5552 5560 5733 5733Z TravelMate 5740 5735 5735Z 5740G Gateway NV55C NV50A NV53A NV59C [6 Cells/58WH] About this item Battery type: Li-ion; Cells: 6-cell; Capacity:5200mAh / 58Wh; Voltage: 11.1V Made of High-Quality Materials, Grade A Battery cells and Packed with Safety Features. Compatible part number:31CR19/65-2 / 31CR19/66-2 / 3ICR19/66-3 / 31CR19/65-2 / AS10D31 / AS10D3E / AS10D41 / AS10D51 / AS10D61 / AS10D71 / AS10D75 / AS10G3E / AS10D / BT.00603.111 / BT.00606.008 / BT.00607.125 / BT.00607.127 / AK.006BT.075 / AS10D73 / BT.00603.117 / BT.00605.062 / BT. 00607.130 / AK.006BT.080 / AS10D75 / BT.00603.124 / LC.BTP00.123 / BT.00604.049 / BT.00605.065 / BT.00607.126 Compatible Models 1:Acer Aspire 4250 4253 4339 4349 4551 4551G 4738 4738Z 4739 4739Z 4743 4743Z 4741 4750 4750G 4755 4755G 4752 4752G 4752Z 4771 5251 5252 5253 5336 5349 5551 5551G 5552G 5560 5560G 5733 5741 5741G 5741Z 5742 5742G 5742Z 5742ZG 5750 5750G 5750Z 5750ZG 5755 5755G 5736 5736Z 7741G 7741Z-5731 7741Z-4643 7551G 7552G 7750Z Compatible Models 2:Acer TravelMate 4740 4750 5335 5542 5542G 5735 5735Z 5740 5740G 5740Z 5742 5742G 5742Z 5742ZG 5744 5760 6495T 7740 7740G 7750 7750G 7750Z 8472 8473 8573 TM5742;Gateway NV57H NV55S NV50A NE56R NV51B NV75S NV77H NE51B NV76R NV52L NV73A NV79C NV56R NV49C.
A high-end pre-owned HP ZBook Fury G8 mobile workstation with 17.3" display, Intel Core i7-11850H, 64GB RAM, 512GB SSD+HDD 1TB, and NVIDIA RTX A2000 (T1200) 4GB—built for demanding engineering, design, and creative workflows.
The ViewSonic 24″ 100Hz IPS Monitor is a high-performance display designed for work, entertainment, and gaming. It features a 24-inch Full HD IPS panel, delivering sharp visuals, vibrant colors, and wide viewing angles. Whether you’re working on creative projects, watching movies, or gaming, the high-quality display ensures a smooth and immersive experience. With a 100Hz refresh rate, this monitor provides ultra-smooth motion, reducing screen tearing and stuttering. The fast refresh rate enhances gaming, making movements appear fluid and responsive. It also improves everyday tasks like scrolling and video playback, providing a better overall visual experience. The IPS panel technology ensures consistent and accurate colors, making it ideal for content creators, designers, and professionals. The 178° wide viewing angles allow clear visibility from different positions, ensuring that images and text remain sharp and distortion-free. Designed with eye comfort in mind, the monitor features flicker-free technology and a blue light filter. These features help reduce eye strain and fatigue, making it comfortable for extended use. Whether you’re working long hours or enjoying a gaming session, this monitor keeps your eyes protected. The sleek and modern design fits seamlessly into any workspace or gaming setup. Its thin bezels provide a more immersive viewing experience, perfect for multi-monitor setups. The monitor includes multiple connectivity options, such as HDMI and DisplayPort, ensuring compatibility with a wide range of devices. With its fast refresh rate, stunning color accuracy, and ergonomic design, the ViewSonic 24″ 100Hz IPS Monitor is a great choice for professionals, gamers, and everyday users. It offers smooth performance, vibrant visuals, and long-term eye comfort in a stylish package. Specifications: Display : 24″ IPS Resolution : 1920×1080 FHD Refresh Rate : 100Hz Response Rate : 1ms
Huawei IdeaHub Board 2 86-inch display delivers an immersive teaching and collaboration experience with large 4K visuals. It helps teachers present clearly and engage students effectively. As a result, classrooms benefit from better interaction and visibility. The 86-inch screen features 4K UHD resolution with zero-gap laminated glass. Therefore, it reduces reflection and improves clarity. Moreover, the D-LED backlight and 60Hz refresh rate ensure stable and consistent visuals. It supports up to 20 touch points using infrared multi-touch technology. In addition, smart handwriting recognition and annotation allow natural writing. The low latency writing response improves accuracy during lessons. The system includes a quad-core processor with 4GB RAM and 32GB storage. Consequently, it runs applications smoothly. It supports Android, Windows, iOS, and macOS for flexible integration. It also includes key capabilities such as 4K UHD resolution, multi-touch interaction, smart annotation tools, wide connectivity options, and cross-platform support. Huawei IdeaHub Board 2 86-inch display is built to enhance collaboration and simplify teaching. Specifications: 86-inch 4K UHD display with 3840 × 2160 resolution Supports up to 20 touch points with infrared technology Zero-gap laminated glass with D-LED backlight Low latency writing with smart annotation support Quad-core CPU with 4GB RAM and 32GB storage
The Samsung 85″ Neo QLED QN70F 4K Vision AI Smart TV QA85QN70FAUXTW delivers a premium large-screen entertainment experience with advanced Neo QLED technology. It produces bright, sharp, and detailed images with strong contrast, making movies, sports, and games more immersive on the massive 85-inch display. Neo QLED technology uses Quantum Mini LEDs to improve brightness control and enhance contrast accuracy. As a result, dark scenes appear deeper while bright scenes remain vivid and well balanced. This helps deliver a more realistic viewing experience across different types of content. Vision AI enhances picture and sound in real time. It analyzes each scene and automatically adjusts brightness, sharpness, and color. Therefore, the TV consistently delivers optimized visuals without manual adjustments. In addition, AI upscaling improves lower-resolution content closer to 4K quality for better clarity and detail. HDR support expands brightness range and color depth, making visuals more dynamic and lifelike. Fast motion handling also improves clarity, which enhances sports and action viewing with smoother movement and reduced blur. The Smart TV platform provides easy access to streaming apps, gaming features, and smart home controls. It runs smoothly and responds quickly when switching between apps. In addition, the slim design with thin bezels gives the Samsung 85 Neo QLED QN70F 4K Vision AI Smart TV QA85QN70FAUXTW a modern and premium appearance. Overall, this Samsung Neo QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful home entertainment experience. Specifications: Neo QLED technology delivers bright, detailed picture quality 85-inch 4K display provides immersive large-screen viewing Vision AI optimizes picture and sound automatically HDR improves contrast, brightness, and color depth Smart TV platform supports apps, streaming, and smart features
Looking to take your gaming to the next level? Look no further than the LG 27″ 165Hz UltraGear monitor. This powerhouse display is your ticket to an immersive and smooth gaming experience. First and foremost, let’s talk about speed. With a blazing-fast 165Hz refresh rate, this monitor ensures buttery-smooth gameplay, free from motion blur or screen tearing. Get ready to react quicker and gain a competitive edge in every game. Transitioning to visuals, prepare to be amazed by the stunning clarity and vibrant colors of the UltraGear monitor. With a crisp 27-inch display and high-resolution capabilities, every detail pops off the screen, immersing you in your favorite games like never before. Moreover, the monitor’s advanced IPS panel technology ensures wide viewing angles and consistent color accuracy, so you can enjoy stunning visuals from any angle without distortion. But that’s not all – the UltraGear monitor is also packed with features to enhance your gaming experience. From customizable gaming modes to built-in crosshair overlays, it offers everything you need to optimize your gameplay to your preferences. Additionally, with support for HDR content, you can enjoy breathtaking visuals with enhanced contrast and brightness, bringing your games to life with stunning realism. In conclusion, the LG 27″ 165Hz UltraGear monitor is the ultimate gaming companion for enthusiasts seeking unparalleled performance and immersion. Elevate your gaming setup with this powerhouse display and experience gaming like never before. Specifications: Display : 27″ IPS Resolution : QHD (2560 x 1440) Refresh Rate : 165Hz Response Rate : 1ms GTG
The Samsung 77-Inch OLED S90F 4K Vision AI Smart TV | QA77S90FAEXTW is a premium entertainment display that combines OLED picture quality with advanced AI-powered features. Designed for movie enthusiasts, gamers, and streaming fans, it delivers stunning visuals with exceptional color accuracy and contrast. In addition, the large 77-inch screen creates a more immersive viewing experience for any home theater setup. The OLED panel features self-illuminating pixels, and it produces deep blacks with remarkable contrast. As a result, dark scenes appear more detailed while bright highlights remain vivid and realistic. Furthermore, the 4K UHD resolution ensures sharp image quality, making every scene look clear and lifelike. Samsung integrates Vision AI technology into this model, and it intelligently enhances picture and sound performance in real time. Therefore, content appears more refined and optimized regardless of the source. In addition, AI upscaling improves lower-resolution content by bringing it closer to 4K quality. HDR support enhances brightness and expands color depth, so viewers can enjoy more realistic visuals with greater dynamic range. Meanwhile, Samsung’s Smart TV platform provides seamless access to popular streaming services, gaming features, and smart home controls. The slim OLED design adds a premium look to any living space, while the advanced processing technology ensures smooth performance across movies, sports, and games. Overall, the Samsung 77-Inch OLED S90F 4K Vision AI Smart TV offers premium picture quality, intelligent features, and an immersive entertainment experience. Specifications: OLED display technology delivers deep blacks and exceptional contrast 77-inch 4K UHD screen provides immersive large-format viewing Vision AI enhances picture and audio quality in real time HDR support improves brightness, contrast, and color accuracy Smart TV platform offers streaming apps and smart home connectivity
PCE 1500 M8 1500VA 600W PCE UPS SYSTEM M8-1500 1500VA 600W Input Voltage: 220/230/240 VAC, 1Ø2Wires Input Frequency: 50 or 60 Hz +/-10% (auto sensing) Power: 600W Output voltage: 220/230/240VAC+/-1% Output Frequency: 50 or 60 Hz +/-1% Full Protection: Overload, discharge, and overcharge protection PCE UPS SYSTEM M8-1500 1500VA 600W Input Voltage: 220/230/240 VAC, 1Ø2Wires Input Frequency: 50 or 60 Hz +/-10% (auto sensing) Power: 600W Output voltage: 220/230/240VAC+/-1% Output Frequency: 50 or 60 Hz +/-1% Full Protection: Overload, discharge, and overcharge protection
OEM-quality trackpad replacement (without flex cable) for MacBook Pro 13″ (Models A2251 and A2289, 2020) in Silver finish—engineered for precise Force Touch response, smooth multi-touch gestures, and seamless integration with the original chassis. Compatible With: MacBook Pro 13″ (2020, Two Thunderbolt Ports) – Model A2251 (Intel Core i5/i7) MacBook Pro 13″ (2020, Four Thunderbolt Ports) – Model A2289 (Intel Core i5/i7) (Note: Both models share the same trackpad assembly despite port differences.) MacBook Pro 13″ (2020, Two Thunderbolt Ports) – Model A2251 (Intel Core i5/i7) MacBook Pro 13″ (2020, Four Thunderbolt Ports) – Model A2289 (Intel Core i5/i7) (Note: Both models share the same trackpad assembly despite port differences.) Part Type: Trackpad only—does not include the flex cable, Taptic Engine, or mounting hardware. Designed for technicians who will reuse the original internal components. Finish: Silver—matches the Silver MacBook Pro 13″ top and bottom case for perfect aesthetic continuity. Force Touch Support: Fully compatible with pressure-sensitive input and haptic feedback when paired with the original Taptic Engine and logic board—ensuring full macOS gesture functionality (e.g., Force Click, Lookup, Pressure-sensitive drawing). Precision Build: Features the same glass surface texture, curvature, and micro-click mechanism as Apple’s original—delivering consistent tracking accuracy and tactile feel. Installation Requirements: Requires full bottom case disassembly and careful transfer of the original flex cable and Taptic Engine. Adhesive must be applied precisely to maintain structural rigidity and sensor alignment. Recommended for certified or experienced repair technicians only.
Apple MacBook Pro 13” (2015) — reliable performance and classic MacBook design.• Intel Core i5 • 8 GB RAM • 128 GB SSD • Retina DisplaymacOS | Backlit Keyboard
MacBook Pro 13″ Keyboard Replacement/Compatible for Apple MacBook Pro A1708 Color :- Black, Layout :- US Apple MacBook Pro A1708 Keyboard is a high quality replacement keyboard which is perfect for replacing your old and broken laptop keyboard. Before you order,Please firstly compare the picture with your keyboard, especially the ribbon cable (position, length and width). Make sure that the model of laptop and part number of keyboard is the right one you need as well as the layout version.
The MSI PRO MP275W E2 27″ 120Hz Business Monitor is designed to enhance productivity with smooth visuals and eye-care features. It features a 27-inch Full HD IPS panel, delivering clear images and wide viewing angles for everyday work tasks. With a 120Hz refresh rate, the monitor provides smoother motion compared to standard displays. This makes it ideal not only for business use but also for light entertainment. The MSI PRO MP275W E2 27″ 120Hz Business Monitor ensures reduced motion blur and a more comfortable viewing experience. The monitor supports Anti-Flicker and Less Blue Light technologies, helping to reduce eye strain during long hours of use. These features are especially useful in office settings or remote work environments. Thanks to its built-in speakers, users can enjoy basic audio without needing external accessories. The MSI PRO MP275W E2 27″ 120Hz Business Monitor also includes HDMI and VGA ports, offering compatibility with modern and older devices. Its sleek, minimal design fits easily into any workspace, whether at home or in an office. The adjustable tilt function allows users to set the screen at the most comfortable viewing angle. This monitor is also VESA mount compatible, making it easy to attach to a monitor arm or wall mount. It supports a clutter-free setup that boosts workspace efficiency. In conclusion, the MSI PRO MP275W E2 27″ 120Hz Business Monitor offers smooth performance, comfort-focused features, and modern connectivity in a professional package. It’s ideal for business users who value quality and simplicity. Specifications: Display : 27″ IPS Resolution : 1920 x 1080 (FHD) Refresh Rate : 120Hz Response Time : 1ms (MPRT) / 4ms (GtG) Speaker : 2x 2W
The MSI MAG 275CQF E18 is a 27-inch curved gaming monitor built for immersive and smooth gameplay with WQHD resolution (2560 × 1440). It delivers vibrant visuals and responsive performance for gamers seeking clarity and speed. Furthermore, its rapid panel enhances action scenes and detailed environments effectively. It features a 180 Hz refresh rate and a 0.5 ms (GtG) response time, which help reduce motion blur and improve tracking in fast‑paced games. In addition, Adaptive‑Sync support minimizes screen tearing for fluid gameplay. The Rapid VA panel produces rich colors and deep contrast. Moreover, HDR Ready technology enhances contrast and shadow detail for more realistic visuals. Anti‑Flicker and Less Blue Light technologies improve viewing comfort during long sessions. As a result, players stay focused and comfortable. The monitor also supports AI Vision, which boosts brightness and color saturation in darker scenes. In addition, HDMI™ CEC console mode improves compatibility with game consoles. Consequently, MAG 275CQF E18 provides enjoyable gaming whether on PC or console. This monitor combines high refresh performance, curved immersion, and advanced color features to enhance both competitive and casual gaming experiences. Specifications: 27-inch WQHD (2560 × 1440) curved Rapid VA panel 180 Hz refresh rate with 0.5 ms (GtG) response time Adaptive‑Sync support for smooth performance HDR Ready with Anti‑Flicker and Less Blue Light technologies AI Vision and HDMI™ CEC console mode compatibility
The Apildella 14″ Triple Laptop Screen Extender gives your laptop three screens for better productivity. It allows you to work faster and more comfortably. The extender adds two extra displays around your laptop screen. This creates a wider workspace for all your tasks. Moreover, the Apildella Triple Laptop Screen Extender offers clear and bright visuals. Each screen delivers sharp quality for work, gaming, and media. The colors stay consistent across all panels. This helps you focus on your tasks with ease. In addition, the screens connect through simple USB-C or HDMI. The setup process is quick, and you can start using it instantly. There is no need for heavy software. This makes the extender ideal for travel and office use. Furthermore, the Apildella 14″ Triple Laptop Screen Extender works with many laptops. It supports Windows, macOS, and some mobile devices. This wide compatibility makes it useful for students, creators, and professionals. It helps you multitask with less stress. Also, the extender features a foldable and lightweight design. You can pack it in your laptop bag easily. It fits well in small workspaces. This makes it great for remote work and travel. The Apildella Triple Laptop Screen Extender also allows adjustable viewing angles. You can tilt the screens to get a comfortable view. This helps reduce eye strain during long hours of use. It improves your overall productivity. Overall, the Apildella 14″ Triple Laptop Screen Extender gives you more space, better multitasking, and stronger efficiency. It upgrades your laptop into a full workstation instantly. It is perfect for work, study, design, and streaming anywhere you go. Specifications: Display : 14″ Resolution : FHD 1920×1080 Refresh Rate : 60Hz Compatible with 13″ to 17″ laptops, windows/mac
The MSI MAG 342CQR E2 34″ 180Hz Curved Gaming Monitor is designed to elevate your gaming experience. Its 34-inch ultrawide display with a 3440 x 1440 resolution provides immersive visuals, while the 1500R curvature ensures a comfortable viewing angle. MSI Firstly with a rapid 180Hz refresh rate and 1ms MPRT response time, this monitor delivers smooth and responsive gameplay, ideal for fast-paced genres like FPS and racing games. The VA panel offers a 3000:1 contrast ratio, producing deep blacks and vibrant colors. Furthermore the MSI MAG 342CQR E2 supports HDR Ready technology, enhancing image details and color accuracy. AI Vision technology further improves brightness and color saturation, revealing details in dark scenes. Moreover connectivity options include DisplayPort 1.4a and HDMI 2.0b ports, supporting up to 180Hz and 100Hz refresh rates, respectively. The monitor also features Adaptive Sync technology, reducing screen tearing and stuttering. Also ergonomic adjustments are made easy with tilt, swivel, and height options, ensuring comfort during extended gaming sessions. The monitor’s frameless design and anti-glare coating provide a sleek look and reduce eye strain. In summary, the MSI MAG 342CQR E2 34″ 180Hz Curved Gaming Monitor combines high performance, immersive visuals, and ergonomic design, making it a top choice for gamers seeking a competitive edge. Specifications: Display : 34″ VA Resolution : 3440 x 1440 (UWQHD) Refresh Rate : 180Hz Response Time : 1ms (MPRT) Curvature : Curve 1500R
Designed by Apple Deeper, richer bass tones Greater protection from sweat and water Control music and video playback Answer and end calls Works with all devices that have a Lightning connector and support iOS 10 or later, including iPod touch, iPad, and iPhone
The ViewSonic 27″ 75Hz Monitor offers an exceptional viewing experience for both work and play. Its large 27-inch screen provides ample space for multitasking, gaming, and streaming. Featuring a full HD resolution, the ViewSonic 27″ 75Hz Monitor delivers crisp and clear visuals. Whether you’re editing photos, watching videos, or browsing the web, every detail comes to life with stunning clarity. The 75Hz refresh rate ensures smooth and fluid motion, reducing screen tearing and stuttering. This makes it perfect for fast-paced gaming and high-definition video playback. Designed with user comfort in mind, the ViewSonic 27″ 75Hz Monitor features an adjustable stand. You can easily tilt, swivel, and adjust the height to find the perfect viewing angle. The monitor’s slim bezel design provides an immersive viewing experience, minimizing distractions and maximizing screen space. This sleek and modern design complements any workspace or gaming setup. Equipped with multiple connectivity options, the ViewSonic 27″ 75Hz Monitor is versatile and compatible with various devices. It includes HDMI and VGA ports, making it easy to connect to your computer, gaming console, or other peripherals. The ViewSonic 27″ 75Hz Monitor also features built-in speakers for convenient audio playback. Enjoy clear and immersive sound without the need for external speakers. In conclusion, the ViewSonic 27″ 75Hz Monitor combines stunning visuals, smooth performance, and ergonomic design for an enhanced viewing experience. Upgrade to the ViewSonic 27″ 75Hz Monitor today and enjoy a perfect blend of work and play. Specifications: Display : 27″ IPS Resolution : FHD 1920 x 1080 Refresh Rate : 75Hz Response Rate : 1ms MRPT
The MSI PRO MP251W E2 25″ FHD 120Hz Monitor delivers crisp, clear visuals for work, entertainment, and casual gaming. It uses a Full HD panel that shows sharp detail in movies, documents, and web browsing. The 25-inch size gives enough screen space without overwhelming your desk. This makes it a practical choice for home and office setups. Moreover, the MSI PRO MP251W E2 features a 120 Hz refresh rate. This smoother refresh makes motion cleaner and reduces blur during video playback and light gaming. Fast animations and scrolling look fluid. This improves comfort during long sessions. In addition, the monitor uses an IPS panel with wide 178° viewing angles. Colors remain stable even if you move side to side. The panel supports 99% sRGB coverage for natural and balanced color reproduction. This makes it useful not only for daily tasks, but also for creative work and media editing. Furthermore, the MSI PRO MP251W E2 includes adaptive sync technology to help prevent screen tearing when frame rates fluctuate. It also features anti-glare coating and built-in speakers, making it convenient for multimedia and everyday use. Also, the design is clean and modern. The thin bezels give a neat, minimal look that fits many setups. The stand allows tilt adjustment for ergonomic comfort. The monitor supports VESA mounting if you want wall mount or alternate stand setup. Overall, the MSI PRO MP251W E2 25″ FHD 120Hz Monitor balances simplicity, performance, and versatility. It delivers smooth visuals, color quality, and ease of use in a compact form factor. This monitor is a great pick for everyday computing, office tasks, media, and light gaming. Specifications: Display : 25″ IPS Resolution : FHD 1920×1080 Refresh Rate : 120Hz Response Time : 1ms
LG 27U411A-B is a 27-inch Full HD monitor designed for work, entertainment, and everyday gaming. Additionally, it features an IPS panel that delivers accurate colors and wide viewing angles for comfortable daily use. Moreover, the monitor supports a 120Hz refresh rate for smoother motion during gaming and scrolling. Therefore, users can enjoy more fluid visuals with reduced motion blur in fast-moving scenes. In addition, HDR10 support and sRGB 99% color coverage improve brightness and color accuracy. As a result, movies, games, and creative content appear more vivid and detailed. Furthermore, LG includes gaming features such as Dynamic Action Sync, Black Stabilizer, and 1ms Motion Blur Reduction. Likewise, Reader Mode and Flicker Safe technology help reduce eye strain during long sessions. The slim stand and 3-side borderless design create a clean modern setup. Additionally, the monitor supports tilt adjustment and VESA wall mounting for flexible placement options. Finally, LG 27U411A-B combines smooth 120Hz performance, IPS color quality, and modern styling in a versatile 27-inch monitor for gaming and productivity. Manufacturer link Specifications: 27-inch Full HD IPS display 120Hz refresh rate support HDR10 and sRGB 99% color coverage 1ms Motion Blur Reduction technology Slim stand with borderless design
