The Lenovo ThinkVision S27-4e 27″ 100Hz FHD Business Monitor is designed for work, study, and daily tasks. It offers a clean display with smooth motion for a comfortable viewing experience. This monitor is ideal for offices, home setups, and professional environments. With its 27-inch FHD panel, the Lenovo ThinkVision S27-4e 27″ 100Hz FHD Business Monitor delivers sharp and vibrant visuals. Text appears clear, and colors look natural. Therefore, it helps reduce eye strain during long hours of work. The 100Hz refresh rate makes movement on the screen smoother than standard 60Hz monitors. This is especially helpful for scrolling, video playback, and light gaming. As a result, your workflow feels more fluid and responsive. The Lenovo ThinkVision S27-4e 27″ 100Hz FHD Business Monitor also features slim bezels for a modern and clean look. This design allows for a more immersive view and makes it perfect for dual-monitor setups. Its adjustable tilt stand helps you find the right angle for better comfort. Additionally, the monitor uses energy-efficient technology to reduce power usage. This makes it a smart choice for businesses and home offices. Connectivity options include HDMI and VGA for easy pairing with laptops and desktops. You can connect it quickly without any extra adapters. This adds convenience and flexibility to your workspace. In conclusion, the Lenovo ThinkVision S27-4e 27″ 100Hz FHD Business Monitor offers smooth performance, clear visuals, and a professional design. It is a reliable display for productivity and everyday use. Specifications: Display : 27″ IPS Resolution : FHD Refresh Rate : 100Hz Response Time : 4ms GtG
The Lenovo Legion R24e is a 23.8-inch Full HD gaming monitor designed for smooth competitive gameplay and responsive visual performance. It uses an IPS panel with a high refresh rate for improved motion clarity and wide viewing angles. Additionally, its slim NearEdgeless design fits modern gaming and workstation setups. This monitor delivers a 1920 × 1080 resolution with up to 180Hz refresh rate support. Moreover, it features a 0.5ms MPRT response time to reduce motion blur during fast-paced gaming sessions. The Lenovo Legion R24e also supports AMD FreeSync technology for smoother gameplay with reduced screen tearing. The IPS panel provides 99% sRGB color coverage and wide 178-degree viewing angles for accurate and consistent image quality. Therefore, the monitor works well for gaming, streaming, and everyday multimedia tasks. It also includes anti-glare screen treatment for improved viewing comfort. The Lenovo Legion R24e includes HDMI 2.1 TMDS and DisplayPort 1.4 connectivity for gaming PCs and consoles. Additionally, the ergonomic stand supports tilt, swivel, pivot, and height adjustment for flexible positioning. VESA mount compatibility also allows wall or monitor arm installation. Community feedback highlights the monitor’s strong color quality, smooth refresh rate performance, and good value for competitive gaming setups. Specifications: 23.8-inch Full HD IPS gaming display 180Hz refresh rate for smooth gameplay 0.5ms MPRT response time for reduced blur AMD FreeSync support for tear-free visuals Ergonomic stand with height, tilt, swivel, and pivot adjustment
HP M24f Monitor Overview The HP M24f is a 24-inch Full HD monitor designed for work and everyday use. It offers a slim design and reliable performance. As a result, it suits offices, home setups, and students. 24-Inch Full HD Display This monitor features a 24-inch Full HD resolution. Therefore, text appears sharp and easy to read. Moreover, images look clear and well balanced. Because of this, it supports long working sessions comfortably. In addition, the wide viewing angles improve screen visibility. As a result, content stays clear from different positions. Smooth Visual Performance The HP M24f delivers smooth visuals for daily tasks. As a result, scrolling and browsing feel natural. Furthermore, the display maintains consistent brightness. This improves overall viewing comfort. Eye Comfort and Anti-Glare Screen This monitor includes eye comfort features. Therefore, it helps reduce eye strain. In addition, the anti-glare coating minimizes reflections. As a result, users can work comfortably in bright rooms. Connectivity and Compatibility The HP M24f includes HDMI and VGA ports. As a result, it connects easily to modern and older devices. Moreover, setup is quick and simple. Therefore, users can start working right away. Slim Design and Mounting Options The monitor features a sleek and modern design. In addition, it supports VESA mounting. As a result, users can save desk space and customize layouts. Ideal for Daily Use This monitor focuses on clarity and reliability. Moreover, it suits office work, browsing, and media viewing. In conclusion, the HP M24f offers a balanced and efficient display solution. Specifications: Display: 23.8-inch IPS panel with 178-degree ultra-wide viewing angles. Resolution: FHD (1920 X 1080) at 75Hz refresh rate. Visual Quality: 300 nits brightness, 1000:1 contrast ratio, and 99% sRGB color gamut for accurate, vibrant, and consistent colors. Gaming/Performance: AMD Free Sync technology reduces screen tearing and stuttering
BATTERY DELL 93FTF Laptop Battery Compatible with Dell Precision15 3520 3530 Dell Latitude12 5280 E5280 Latitude E5280 E5480 E5580 E5490 E5590 E5480 E5290 E5591E5491 Series D4CMT 4YFVG 83XPC 083XPC 11.4V 51Wh About this item Battery Type:3cell Li Polymer Best Quality Voltage &Capacity :11.4V 51Wh 4254MAH Safeguard features against incorrect voltage, short circuit, internal overheating 100% Brand new ,Grade A cells battery; Quality assurance;every battery has passed factory testing; 500+ recharge cycles over
90W Adapter Laptop Charger for Toshiba Satellite L305 L305D L455 L505 L505D L635 L645 L655 L655D L745 L755 L775 L855 L875 A105 A135 C655 C675 C850 C855; PA3714U-1ACA PA5035U-1ACA Power Cord
WIWU Pilot Water Resistant High-Capacity Laptop Sleeve Case
NB OMS035 NB Desk Mount with Keyboard Tray for 19-27 Inch Screens Up to 9Kg Load Full Motion • Desk Stand offers comfortable viewing position that promotes healthy movements and requires minimum space at home or the office • Fits most 19 to 27 inch screens with ultra-wide foldable keyboard tray • Full motion mount with rotation 360°, swivel ±90° and Tilt angle +12° to -15° • The mount has an extension of 40” (1020 mm), retraction of 3.9” (100mm) and an upright lift distance of 18.9” (480mm) • Design includes a durable gas-strut to hover at any working position • Built-in extra shelf for phone and small goods storage • Supports load from 2 to 9 kg • Mounting VESA compliance 75×75 mm and 100×100 mm • Product dimensions: 24 x 7.3 x 14.4 cm Specifications: Specifications • NB Desk Mount with Keyboard Tray for 19-27 Inch Screens Up to 9Kg Load Full Motion • Desk Stand offers comfortable viewing position that promotes healthy movements and requires minimum space at home or the office • Fits most 19 to 27 inch screens with ultra-wide foldable keyboard tray • Full motion mount with rotation 360°, swivel ±90° and Tilt angle +12° to -15° • The mount has an extension of 40” (1020 mm), retraction of 3.9” (100mm) and an upright lift distance of 18.9” (480mm)
A1989 Battery Replacement, A1964 Battery for MacBook Pro 13″ A1989 (Mid 2018 2019) A2251(2020 Release) EMC 3214 3358 3348 MR9Q2LL/A MR9R2LL/A MR9T2LL/A MR9U2LL/A MR9V2LL/A MV962LL/A MV9A2LL/A 【Specification】Voltage: 11.41V. Capacity: 58Wh/ 5086mAh. Battery Type: Li-ion. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 【Compatible Part Number】A1964 A1989 A1989(EMC 3214) A1989(EMC 3358) A2251(EMC 3348) 020-02497 616-00419. 【Compatible Laptop Models】MacBook Pro 13-Inch model A1989 (Mid 2018, Mid 2019) , A2251(2020 Release), Order No MR9Q2LL/A MR9R2LL/A MR9T2LL/A MR9U2LL/A MR9V2LL/A MV962LL/A MV972LL/A MV982LL/A MV992LL/A MV9A2LL/A MWP72LL/A MWP82LL/A MWP42LL/A MWP52LL/A MWP62LL/A MR9Q2 MR9R2 MR9T2 MR9U2 MR9V2 MV962 MV972 MV982 MV992 MV9A2 MWP62. 【Note】The tools are included. Double-sided tape is attached to the back of the battery, but NO battery installation instruction. The MBP battery is difficult to disassemble, we suggest you search for related installation videos or find a technician for help.
OEM-quality left and right loudspeaker replacement pair for MacBook Pro 14″ (Model A2442, 2021, M1 Pro/Max)—restores Apple’s high-fidelity six-speaker audio system with precise sound staging, rich bass, and clear highs. Compatible With: MacBook Pro 14-inch (2021, Model A2442) with Apple M1 Pro or M1 Max chip (Model Identifier: MacBookPro18,3 or MacBookPro18,4). Includes: Complete left and right speaker assemblies, each containing: Dual-driver units (force-cancelling woofers + tweeters) Pre-attached flex cables with OEM connectors Mounting brackets and acoustic seals Dual-driver units (force-cancelling woofers + tweeters) Pre-attached flex cables with OEM connectors Mounting brackets and acoustic seals Audio Performance: Matches Apple’s advanced six-speaker sound system with: Wide stereo separation High dynamic range Spatial audio and Dolby Atmos support (when paired with original logic board and firmware) Wide stereo separation High dynamic range Spatial audio and Dolby Atmos support (when paired with original logic board and firmware) OEM Build Quality: Precision-engineered housings with exact acoustic chambers, grille alignment, and cable routing—ensures zero rattling and full macOS audio calibration compatibility. Common Use Cases: Replaces speakers damaged by liquid ingress, physical impact, or internal failure (e.g., no sound, distorted audio, or imbalance between channels). Installation Note: Requires full bottom case and logic board disassembly. Speakers are secured with screws and acoustic adhesive. Highly recommended for certified Apple technicians or experienced professionals only due to complex internal layout and sensitivity of audio components. Important: This speaker pair is exclusive to A2442 (14″, 2021, M1 Pro/Max). Not compatible with 16″ MacBook Pro (A2485), 13″ models, or Intel-based MacBooks. This speaker pair is exclusive to A2442 (14″, 2021, M1 Pro/Max). Not compatible with 16″ MacBook Pro (A2485), 13″ models, or Intel-based MacBooks. Model Verification: Confirm your device via > About This Mac > Model Identifier (must be MacBookPro18,3 or MacBookPro18,4).
The 85W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. The 85W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Pro stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. When the connection is secure, an LED located at the head of the DC connector lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length, while the AC wall adapter (also provided) gives you an even easier and more compact way to travel. Designed to be the perfect traveling companion, the adapter has a clever design which allows the DC cable to be wound neatly around itself for easy cable storage. Compatible with MacBook Pro with 13-inch Retina display. See this article for more details about choosing the right one. Knowing which specific Mac model you have is important. If you are running OS X Lion (10.7) or later go to the “” menu at the top left of your screen, choose “About this Mac” then click the “More Info…” button. Your Mac model and generation will be displayed. If you are running an earlier version of OS X, you can enter your serial number here to find out which model you have. COMPATIBILITY Mac Models: MacBook Pro (Retina, 13-inch, Late 2012 – 2015)
Are you in search of a monitor to help you boost productivity at your workplace or home office? Well, look no further than the MSI PRO MP2412 monitor. It’s a cost-effective and user-friendly solution that caters to your professional needs. First and foremost, the MSI PRO MP2412 boasts a 23.8-inch display, providing ample screen space for your tasks. Whether you’re working on documents, spreadsheets, or simply browsing the web, this monitor offers a comfortable and efficient workspace. In addition, the Full HD resolution ensures sharp and clear visuals. As a result, it’s easier to read text, view images, and watch videos with outstanding clarity. To further enhance your working experience, the monitor is equipped with anti-glare technology. This allows you to work for extended periods without straining your eyes. Furthermore, this feature comes in handy even in well-lit environments. Connectivity is a breeze with the VGA and HDMI ports. These ports accommodate various devices, including laptops, desktops, and more. As a result, this flexibility ensures that you can seamlessly switch between work and personal tasks. The MSI PRO MP2412 features a sleek, space-saving design that can effortlessly integrate into any office or home office setup. Its slim and stylish appearance adds a touch of sophistication to your workspace. For ergonomic comfort, the monitor offers tilt adjustability. You can easily find the perfect viewing angle for your specific needs, reducing discomfort during extended work hours. Specifications: Display: 23.8″ Full HD (1920×1080) Performance: 100Hz Refresh Rate, 1ms MPRT Response Time, 4000:1 Contrast Ratio. Connectivity: HDMI 1.4b, DisplayPort 1.2a, Audio Out.
The HP Series 7 Pro 27″ 2K 165Hz Gaming Monitor delivers crisp, sharp visuals for games, work, and media. Its 2K resolution shows more detail than FHD. The 27-inch size gives ample space for immersive scenes and multitasking. This helps you see more content and stay productive. Moreover, the HP Series 7 Pro 27″ 2K 165Hz Gaming Monitor features a high 165 Hz refresh rate. This refresh rate makes motion smoother and cleaner on screen. Fast-paced games and action scenes appear smoother and responsive. This reduces blur and improves reaction time. In addition, the monitor offers low response time for precise input. Quick response helps reduce ghosting and keeps fast visuals sharp. It makes your movements feel accurate during gameplay. This enhances gaming performance, especially in competitive titles. Furthermore, the HP Series 7 Pro 27″ 2K 165Hz Gaming Monitor uses a high-quality panel with bright colors and good contrast. Colors stay strong and true under different viewing angles. Also, the monitor supports multiple connection options like HDMI and DisplayPort. This allows easy setup with PCs, laptops, or consoles. The installation is simple, and connections are stable. This makes it ready quickly for gaming or work. The monitor’s design is modern and minimal. The slim bezels offer a sleek look that fits many setups. The stand is stable and supports adjustable viewing angles. The build feels solid, adding long-term durability. Overall, the HP Series 7 Pro 27″ 2K 165Hz Gaming Monitor provides strong performance, sharp visuals, and smooth motion. It improves gaming, creative work, and daily tasks. It fits gamers, designers, and professionals who want quality and speed in one display. Specifications: Display : 27″ IPS Resolution : QHD 2560×1440 Refresh Rate : 165Hz Response Time : 5ms
Brand Microsoft Connectivity Technology USB Connector Type USB Compatible Devices Laptops Compatible Phone Models Microsoft Special Feature Travel Mounting Type Wall Mount Total USB Ports 1 Wattage 65 watts Microsoft Surface Power Supply 65W and Power Adapter Non Retail Packaging
The Darkflash G27SE 27″ 75Hz FHD Monitor delivers stunning visuals and smooth performance. Whether gaming or working, this monitor enhances your experience with vibrant colors and sharp details. Featuring a 27-inch Full HD display, the Darkflash G27SE provides ample screen space for multitasking. Enjoy immersive viewing with a resolution of 1920×1080, perfect for watching videos or browsing the web. With a refresh rate of 75Hz, this monitor offers smooth and fluid visuals, reducing motion blur during fast-paced scenes. Gamers will appreciate the responsive performance that keeps up with intense action. The Darkflash G27SE monitor is designed with an ultra-thin bezel, providing a sleek and modern look. This design maximizes your viewing area and is perfect for multi-monitor setups, giving you a seamless visual experience. Equipped with multiple connectivity options, including HDMI and VGA ports, the Darkflash G27SE ensures compatibility with various devices. Easily connect your computer, gaming console, or other peripherals without any hassle. The monitor features adjustable settings, allowing you to customize the display to your preference. Adjust the brightness, contrast, and color settings for the best viewing experience, tailored to your needs. With built-in eye-care technology, the Darkflash G27SE reduces eye strain during prolonged use. Enjoy a more comfortable viewing experience with features like blue light reduction and flicker-free technology. In conclusion, the Darkflash G27SE 27″ 75Hz FHD Monitor offers exceptional clarity and performance for both work and play. Upgrade to this monitor today and enjoy vibrant visuals and smooth operation. Specifications: Display : 27″ FHD IPS Refresh Rate : 75Hz
The ViewSonic VA2760-H 27″ FHD 100Hz Monitor delivers sharp and clear visuals for work, study, and entertainment. Its Full HD resolution shows strong detail. The large 27-inch screen gives you more room to multitask. This helps you stay organized and productive. Moreover, the ViewSonic VA2760-H 27″ FHD 100Hz Monitor features a smooth 100Hz refresh rate. This refresh rate makes movement look clean and fluid. It reduces motion blur during fast scenes. This creates a more enjoyable viewing experience. In addition, the monitor uses an advanced panel that provides bright colors. The colors stay accurate from wide angles. This helps your content look consistent and natural. It is perfect for photos, videos, and daily tasks. Furthermore, the ViewSonic VA2760-H 27″ FHD 100Hz Monitor includes important eye-care features. Flicker-Free technology protects your eyes during long sessions. The blue light filter adds extra comfort. These features help reduce eye strain every day. Also, the monitor offers HDMI and VGA ports for easy connection. You can link desktops, laptops, and gaming consoles quickly. The setup process is simple for all users. This makes the monitor suitable for home or office use. The design of the ViewSonic VA2760-H 27″ FHD 100Hz Monitor is modern and clean. The slim frame gives your workspace a sleek look. It fits well in many setups and desk sizes. The build quality is strong and durable. Overall, the ViewSonic VA2760-H 27″ FHD 100Hz Monitor provides smooth performance, bright visuals, and eye comfort. It improves your workflow and entertainment experience. It is ideal for students, gamers, and professionals who want quality and simplicity. Specifications: Display : 27″ IPS Resolution : 1920×1080 Refresh Rate : 100Hz Response Time : 1ms
Genuine-spec US layout keyboard replacement for MacBook Pro 15″ (Models A1706 and A1707, 2016–2017)—featuring Apple’s second-generation Butterfly mechanism, backlighting, and full OEM compatibility for professional-grade repairs. Compatible With: MacBook Pro 15″ (2016, Model A1707) MacBook Pro 15″ (2017, Model A1706) Both models include Touch Bar and are powered by Intel Core i7/i9 processors. MacBook Pro 15″ (2016, Model A1707) MacBook Pro 15″ (2017, Model A1706) Both models include Touch Bar and are powered by Intel Core i7/i9 processors. Layout: Standard US English (QWERTY) with full-size keys, inverted-T arrow keys, and dedicated function row (mapped to Touch Bar). Keyboard Type: Apple’s 2nd-generation Butterfly mechanism—thinner profile with reduced travel; known for sensitivity but requires careful handling. Integrated Features: Backlit keys, ambient light sensor support, and original ribbon cable connector matching Apple’s design for direct logic board attachment. Build & Fit: Precision-engineered to align flush with the top case—ensures consistent key height and tactile response when properly installed. Installation Note: The keyboard is glued into the top case and must be carefully removed and re-adhered. Requires full disassembly of display, battery, and internal components. Recommended for experienced technicians only.
The ASUS ROG Strix XG27ACS 27” QHD 180Hz HDR400 Gaming Monitor is a 27-inch gaming display designed for high-performance gameplay and clear image quality. It uses a Fast IPS panel that delivers wide viewing angles and accurate color reproduction. It features a QHD (2560×1440) resolution, which provides sharper detail and more screen space compared to Full HD. Therefore, it improves both gaming clarity and productivity use. The monitor supports a 180Hz refresh rate, which ensures smoother motion in fast-paced games. In addition, it includes a fast response time that helps reduce motion blur during rapid movement. It is also HDR400 certified, which enhances brightness and contrast in supported content. As a result, images appear more dynamic with improved highlights and shadow detail. Moreover, it supports adaptive sync technology for smoother gameplay and reduced screen tearing when paired with compatible GPUs. The monitor also includes gaming features such as customizable display modes and on-screen controls. Overall, the ASUS ROG Strix XG27ACS 27” QHD 180Hz HDR400 Gaming Monitor is designed for smooth performance, sharp visuals, and responsive gaming in a 27-inch QHD format. Specifications: 27-inch QHD (2560×1440) display 180Hz refresh rate HDR400 support Fast IPS panel Adaptive sync technology 90LM09Q0-B01170
The Xiaomi TV A 55 2026 delivers sharp 4K visuals ideal for movies, shows, and streaming. Its 55-inch display fills your space with rich detail and vibrant colors. The 3840×2160 resolution brings sharp textures and clear images. This creates a cinematic feel right at home. Moreover, the Xiaomi TV A 55 2026 supports HDR formats such as HDR10 and HLG for improved contrast and lifelike scenes. Bright areas shine, and darks stay deep. This helps scenes look more realistic in films and series. In addition, this model benefits from motion-smoothing via MEMC technology. Fast scenes in sports or action movies stay smooth and fluid. This reduces blur and keeps motion clean. As a result, viewing remains comfortable and enjoyable. Furthermore, the Xiaomi TV A 55 2026 runs on a smart platform powered by Google TV. You can access streaming apps, cast content, or browse channels easily. Also, the TV features dual 10 W speakers with Dolby Audio and DTS-X sound support. Audio comes out clear, balanced, and immersive. In addition, connectivity options include multiple HDMI ports, USB, Wi-Fi, Bluetooth, and Ethernet support. This gives flexibility for consoles, streaming devices, or external drives. Setup remains hassle-free for many use cases. Overall, the Xiaomi TV A 55 2026 offers a strong balance of quality, smart features, and ease of use. It works well for entertainment, streaming, and everyday viewing. This TV is ideal for users seeking a 55″ 4K display with modern smart features at a reasonable price. Specifications: Resolution 4K, 3840 × 2160 Refresh rate 60Hz Speaker 2 x 10W Dimensions including base (L × W × H) 1226*312*770mm Dimensions not including base (L × W × H) 1226*76*711mm CPU Quad cortex A55 GPU Mali-G52 MC1 RAM 2GB ROM 8GB
BenQ GW2791 27″ 1080p FHD 100Hz IPS Eye-Care Monitor | 3 Years Warranty is designed for work, study, and everyday entertainment. It combines a Full HD IPS panel, a 100Hz refresh rate, and BenQ Eye-Care technologies to deliver comfortable viewing throughout the day. The monitor features a 27-inch IPS display with a Full HD resolution of 1920 × 1080. Therefore, it produces clear images, accurate colors, and wide 178° viewing angles. In addition, it covers 99% of the sRGB color space, making it suitable for office work, web browsing, and media consumption. Moreover, the 100Hz refresh rate and 5ms GtG response time provide smoother motion when scrolling, streaming videos, or playing casual games. As a result, everyday use feels more responsive and fluid. BenQ Eye-Care technologies include Flicker-Free, Low Blue Light, EyeSafe 2.0 certification, and an ePaper mode. Therefore, the monitor helps reduce eye strain during long work or reading sessions. In addition, the anti-glare matte screen minimizes reflections for improved viewing comfort. The monitor includes one HDMI 1.4 port, one DisplayPort 1.2 input, and a headphone jack for flexible connectivity. Furthermore, the stand supports tilt adjustment, and the monitor is VESA 100 × 100 mm compatible for wall or arm mounting. Finally, the BenQ GW2791 delivers smooth performance, accurate colors, and advanced eye-care features for home, office, and everyday computing. Specifications: Display: 27-inch IPS panel with 1920 × 1080 Full HD resolution Refresh Rate: 100Hz with 5ms GtG response time Color: 99% sRGB coverage with 178° viewing angles Eye Care: Flicker-Free, Low Blue Light, EyeSafe 2.0, and ePaper mode Connectivity: HDMI 1.4, DisplayPort 1.2, headphone jack, and VESA 100 × 100 mm support
Lexar NM620 1TB SSD, M.2 2280 PCIe Gen3x4 NVMe 1.4 Internal SSD, Up to 3500MB/s Read, 3000MB/s Write, 3D NAND Flash Internal Solid State Drive for PC Enthusiasts and Gamers (LNM620X001T-RNNNG) About this item High-speed PCIe Gen3x4 interface: Lexar 1TB SSD up to 3500MB/s read and 3000MB/s write – NVMe 1.4 is supported. Lexar Internal SSD M.2 2280 form factor with 3D NAND Lexar Solid state drive maintains 6x the speed of a SATA-based SSD. Lexar SSD is ideal for PC enthusiasts and gamers. Lexar Internal solid state drive is shock and vibration-resistant without moving parts.
