BenQ RE6504 65” 4K UHD Interactive Flat Panel with Android 13 is a large interactive display designed for classrooms, meeting rooms, and training environments. It combines a 4K touchscreen, built-in Android system, and collaboration tools for interactive presentations. It features a 65-inch IPS panel with 3840 × 2160 (4K UHD) resolution. Therefore, it delivers sharp visuals and wide viewing angles for group interaction. In addition, it supports up to 40-point touch input for multi-user collaboration and writing. Moreover, the panel runs Android (EDLA certified, Android 14/13 depending on region) with built-in apps and Google services support. As a result, users can install apps, browse content, and run teaching or presentation tools directly on the display without an external PC. The RE6504 uses precision IR touch technology. Therefore, it provides fast and accurate writing with low delay. In addition, it includes anti-glare and tempered 9H glass for durability and better visibility in bright rooms. Furthermore, it includes multiple connectivity options such as HDMI, USB, USB-C, OPS slot, and LAN. As a result, it supports laptops, media players, and modular PC systems for flexible installation. It also includes built-in speakers and collaboration software tools. Therefore, it supports presentations, whiteboarding, screen sharing, and remote teaching or meeting scenarios. Finally, the BenQ RE6504 delivers a large 4K interactive workspace with Android integration, multi-touch control, and strong connectivity for education and business use. Specifications: Display: 65-inch IPS panel with 3840×2160 4K UHD resolution Touch: Up to 40-point multi-touch for collaboration System: Built-in Android (EDLA support with Google services) Glass: Anti-glare 9H tempered glass for durability Connectivity: HDMI, USB, USB-C, OPS slot, and LAN support
The Samsung Neo QLED 8K QN900F TV delivers ultra-sharp visuals with advanced AI technology. First, it features 8K resolution for exceptional detail and clarity. In addition, the AI upscaling improves lower resolution content for a near 8K experience. Moreover, the glare-free screen reduces reflections for better viewing in bright rooms. Finally, the Neo QLED technology enhances brightness and contrast for lifelike images. The sleek design and smart features make it ideal for premium home entertainment. Specifications: 8K resolution for ultra-detailed and sharp picture quality AI upscaling improves lower resolution content to near 8K Glare-free screen reduces reflections for better visibility Neo QLED technology enhances brightness and contrast Smart TV features for streaming and easy content access
• LCD panel type: IPS technology • Adaptive sync • Backlight type: W-LED system • Panel Size: 27 inch / 68.6 cm • Display Screen Coating: Anti-Glare, 3H, Haze 25% • Effective viewing area: 597.9 (H) x 336.3 (V) • Aspect ratio: 16:9 • Maximum resolution: 1920 x 1080 @ 75 Hz* • Pixel Density: 82 PPI • Response time (typical): 4 ms (GtG)* • Brightness: 250 cd/m² • Contrast ratio (typical): 1000:1 • SmartContrast: Mega Infinity DCR • Pixel pitch: 0.311 x 0.311 mm • Viewing angle: 178º (H) / 178º (V), @ C/R > 10 • Flicker-free • Display colors: 16.7 M • Scanning Frequency: 30 -83 kHz (H) / 56 -76 Hz (V) • LowBlue Mode • EasyRead • sRGB 1 YEAR WARRANTY
AOC 24B30H2 23.8-inch IPS monitor delivers smooth and clear performance for work, study, and casual use. It focuses on reliable Full HD visuals, wide viewing angles, and stable refresh rate for daily tasks. Additionally, it features a 23.8-inch IPS panel with Full HD resolution (1920 × 1080). This panel provides consistent colors and wide viewing angles, so it ensures clear visuals from different positions. Moreover, it supports a 100Hz refresh rate with 1ms MPRT response time. As a result, it delivers smoother motion and reduces blur during scrolling and light gaming. The monitor includes Adaptive Sync technology. Therefore, it reduces screen tearing and stuttering for more stable visual performance. In addition, it supports HDR and wide color coverage. This improves image depth and color accuracy for media and general use. Furthermore, it offers HDMI 1.4 and VGA connectivity with a frameless design. So it supports modern and legacy devices while keeping a clean desk setup. AOC 24B30H2 23.8-inch IPS monitor provides balanced performance, smooth visuals, and essential features for everyday productivity. Specifications: 23.8-inch IPS panel with Full HD 1920 × 1080 resolution 100Hz refresh rate for smoother visual performance 1ms MPRT response time for reduced motion blur Adaptive Sync for tear-free and stable visuals HDMI 1.4 and VGA connectivity for wide compatibility
NETIS ST-3108 8-Port Fast Ethernet Switch Network Desktop Hub Retail Eight (8) 10/100Mbps RJ45 ports, Auto-Negotiation & Auto MDI/ MDIX IEEE 802.3x flow control for Full Duplex mode and back pressure for Half Duplex mode 1.6Gbps switching fabric capacity/backplane bandwidth Green Ethernet technology for effective power saving LED indicators for simple diagnostics and management Plug and play, no configuration required Compact plastic case, desktop design for home and office use Interface: 8* 10/100M TX ports LED: PWR, 1-8 Cabling Type 10Base-T:UTP Cat.3 or up, 100Base-TX:UTP Cat.5 or up Standard: IEEE 802.3 10Base-T, IEEE 802.3u 100Base-TX,IEEE802.3ab 1000Base-T Access Method: CSMA/CD Transmission Method: Store and Forward Data Transmission Rate: 10/100Mbps(Half-duplex), 20/200Mbps(Full-duplex) MAC Address Table: 1K Operating Temperature: 0-40C Storage Temperature: -40, 70C Operating Humidity: 10%-90%RH non-condensing Storage Humidity: 5%-90%RH non-condensing Input: 100-240V 0.2A 50/60HZ Output:DC 9V/500mA
Fast-charging feature available on select iPhone and iPad models.
product name : MSI G2712 27″ Gaming monitor IPS Panel – Optimize screen colors and brightness to enhance your viewing experience. 170Hz Refresh Rate – Respond faster with smoother frames. 1ms Response Time – Eliminate screen tearing and choppy frame rates. Wide Color Gamut – Game colors and details will look more realistic and refined. Night Vision – Smart black tuner to brighten your day by bringing out the fine details in dark areas. Frameless design – Enjoy the ultimate gaming experience with super narrow bezels. Anti-Flicker and Less Blue Light – Game even longer and prevent eye strain and fatigue. 178° Wide Viewing Angle – Colors and details will stay sharp at more angles with a 178° wide viewing angle. Visualize your victory with the MSI G2712 Esports gaming monitor. Equipped with a 1920×1080, 170hz Refresh rate, 1ms response time IPS panel, the G2712 will give you the competitive edge you need to take down your opponents. Built with AMD FreeSync Premium technology, the G2712 can match the display’s refresh rate with your GPU for ultra-smooth gameplay. Make sure you can hit your mark with all the latest technologies built-in the MSI Esports Gaming monitors for competitive play. IPS grade panel that produces no image distortion and minimum color shifts when viewed from different angles. Additionally, the IPS grade panel will offer clear images and instantly optimize screen color and brightness to ensure that you enjoy every scene at its best. Equipped with a 170hz refresh rate and 1ms response time IPS panel which has the benefit in fast moving game genres such as first person shooters , fighters, racing sims, real-time strategy, and sports. These type of games require fast and precise movements, which an refresh rate and fast response time monitor will put you ahead of your competition. The MSI Esports Gaming Monitor has more gamut coverage compared to general monitors. Gameplay colors and details will look more realistic and refined, to push immersion to its limits Whether your entire screen is dark, or just a few portions have heavy shadows. Let the world’s first smart black tuner brighten your day by bringing out the fine details in dark areas. With a super narrow bezel, enjoy the best immersion possible in the latest games with a multi-monitor 180 degree setup. Enjoy better continuity between screens while playing games, working, or general computing. Specifications: 27″ (69cm) 597.888(H)x336.312(V) Flat IPS 1920 x 1080 (FHD) 0.3114(H)x0.3114(V) 16:9 250 1year warranty manufacturer link
WiWU Pilot Backpack 15.6 inch Travelling Polyester Laptop Business School Travelling Backpack WiWU Pilot Backpack 15.6 inch Travelling Polyester Laptop Business School Travelling Backpack
Genuine-spec US layout keyboard replacement for MacBook Pro (Model A1398, Late 2011–Mid 2012)—featuring durable scissor-switch keys, backlighting, and OEM-fit design for reliable typing and straightforward installation. Compatible With: MacBook Pro 13″: Late 2011 (Model A1278, but labeled A1398 in some regions) – Model Identifier MacBookPro8,1 MacBook Pro 15″: Early 2011, Late 2011, and Mid 2012 – Model Identifiers MacBookPro8,2 (15″ early/late 2011) and MacBookPro9,1 (15″ mid 2012) *(Note: “A1398” is primarily associated with the 15″ unibody MacBook Pro with Retina display (Mid 2012), which was the first Retina MacBook Pro.)* This keyboard fits the non-Retina 15″ A1398 (Mid 2012) and compatible Late 2011 models. MacBook Pro 13″: Late 2011 (Model A1278, but labeled A1398 in some regions) – Model Identifier MacBookPro8,1 MacBook Pro 15″: Early 2011, Late 2011, and Mid 2012 – Model Identifiers MacBookPro8,2 (15″ early/late 2011) and MacBookPro9,1 (15″ mid 2012) *(Note: “A1398” is primarily associated with the 15″ unibody MacBook Pro with Retina display (Mid 2012), which was the first Retina MacBook Pro.)* This keyboard fits the non-Retina 15″ A1398 (Mid 2012) and compatible Late 2011 models. Layout: Standard US English (QWERTY) with full-size keys, inverted-T arrow keys, and dedicated function row (F1–F12). Keyboard Type: Traditional scissor-switch mechanism—robust, tactile, and serviceable (pre-Butterfly era). Integrated Features: Backlit keys (adjustable brightness via F5/F6) OEM ribbon cable with ZIF connector Matches original key spacing and actuation force Backlit keys (adjustable brightness via F5/F6) OEM ribbon cable with ZIF connector Matches original key spacing and actuation force Build & Fit: Precision-molded plastic frame with exact screw mounts and alignment pegs—ensures secure, rattle-free installation in the top case. Installation Note: Keyboard is secured with screws and minimal adhesive. Requires full top case access and battery disconnect. Recommended for intermediate to advanced users or technicians.
The LG UltraGear 24″ 180Hz Gaming Monitor delivers exceptional performance for gamers seeking speed and visual precision. Its 23.8-inch Full HD IPS display ensures sharp images and vibrant colors from wide viewing angles. With a rapid 180Hz refresh rate and 1ms (GtG) response time, this monitor minimizes motion blur, providing smooth gameplay even in fast-paced scenarios. These features give you a competitive edge by allowing quicker reactions during intense gaming sessions. The monitor supports HDR10 and covers 99% of the sRGB color spectrum, enhancing visual immersion with rich and accurate colors. This ensures that game environments appear more lifelike and engaging. Equipped with both NVIDIA G-SYNC and AMD FreeSync technologies, the UltraGear monitor reduces screen tearing and stuttering. This compatibility ensures a seamless gaming experience across various graphics cards. Its virtually borderless design on three sides offers an immersive viewing experience, making it ideal for multi-monitor setups. The sleek aesthetics complement any gaming or workstation setup. Additional gaming features like Black Stabilizer, Crosshair, and FPS Counter provide enhanced visibility and targeting precision. These tools assist in identifying enemies and maintaining focus during gameplay. The monitor includes both HDMI and DisplayPort inputs, offering flexibility in connectivity options for different devices. This ensures compatibility with various gaming consoles and PCs. In summary, the LG UltraGear 24″ 180Hz Gaming Monitor combines high-speed performance, vivid visuals, and gamer-centric features, making it a solid choice for both casual and competitive gamers. Specifications: Display : 24″ VA Resolution : FHD 1920 x 1080 Refresh Rate : 180Hz Response Rate : 5ms GTG
HP E27q G5 QHD Monitor Firstly, the HP E27q G5 monitor is your gateway to an enhanced visual experience without breaking the bank. Whether you’re working, gaming, or indulging in multimedia content, this monitor has you covered. Secondly, one of the standout features of the HP E27q G5 is its Quad High Definition (QHD) display. This means you can enjoy crystal-clear visuals with sharp details for a wide range of tasks. The 27-inch screen size provides a generous canvas for all your computing needs, from productivity to entertainment. You get more screen real estate to enhance your multitasking capabilities. With a sleek and modern design, the E27q G5 monitor is a stylish addition to any workspace. It effortlessly blends with your existing setup, adding a touch of sophistication. Adjusting the monitor to your desired height is easy, thanks to its ergonomic design. Achieve the perfect viewing angle for comfort during extended work or gaming sessions. Connecting the HP E27q G5 is a straightforward process, and it’s compatible with standard ports for quick setup. No need to deal with complicated installation procedures. This monitor is a cost-effective choice for professionals, gamers, and multimedia enthusiasts. It offers top-notch features without straining your budget, making it an excellent investment. Specifications: QHD (2560 x 1440) 1000:1 5ms GtG (with overdrive) IPS
The Samsung Neo QLED QN80F 4K Samsung Vision AI Smart TV 100″ delivers massive screen immersion with advanced visuals. First, it features 4K resolution for sharp detail on a large display. In addition, the Vision AI optimizes picture quality in real time for better clarity. Moreover, the Neo QLED technology enhances brightness and contrast for lifelike images. Finally, the smart TV system provides easy access to streaming apps and content. The 100-inch screen creates a cinema-like experience for movies, sports, and gaming. Specifications: 100-inch 4K display for massive and immersive viewing experience Vision AI optimizes picture quality in real time Neo QLED technology enhances brightness and contrast Smart TV system for apps and streaming access Ideal for movies, sports, and gaming on a large screen
The Samsung 85″ Crystal UHD U8000F 4K Smart TV UA85U8000FUXTW uses a 3840 × 2160 (4K UHD) LCD panel designed for large-screen viewing. It focuses on screen size and basic 4K playback rather than advanced display features. It uses Samsung’s Crystal Processor 4K for image processing and upscaling. This processor converts lower-resolution video to near-4K output on the screen. It also supports HDR10 and HDR10+ for compatible content, which increases contrast range between bright and dark areas. The native refresh rate is 60 Hz. It includes Motion Xcelerator to reduce blur in fast motion scenes such as sports and games. The TV runs Samsung Tizen OS. This system provides access to streaming apps, web browsing, and SmartThings integration. It also supports voice assistants depending on region and setup. For connectivity, it includes HDMI ports, USB ports, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. It also supports features like ALLM for basic gaming responsiveness. Overall, this model is a large 4K Crystal UHD TV focused on size, standard smart features, and basic HDR performance without local dimming or advanced gaming hardware. Specifications: 85-inch LCD panel with 3840 × 2160 4K UHD resolution Crystal Processor 4K with upscaling support HDR10 and HDR10+ compatibility 60 Hz native refresh rate with Motion Xcelerator Tizen OS with HDMI, USB, Wi-Fi, Bluetooth, Ethernet connectivity
The MSI PRO MP272L E2 27-inch business monitor is designed for productivity, office workflows, and everyday multitasking. It offers a clean and modern design that fits well in professional setups. Therefore, it helps users stay focused while maintaining an organized workspace. Moreover, the IPS panel delivers consistent colors and wide viewing angles for comfortable collaboration. The Full HD resolution ensures clear text and sharp visuals for documents, spreadsheets, and web browsing. In addition, the 100Hz refresh rate provides smoother scrolling and a more responsive experience than standard office displays. The monitor also includes MSI Eye Care technologies such as anti-flicker and low blue light support. As a result, it reduces eye strain during long working sessions. Furthermore, adaptive sync support helps improve smoothness in general media playback. In addition, the MSI PRO MP272L E2 27-inch business monitor supports multiple connectivity options, making it easy to connect laptops, desktops, and other devices. It also includes tilt adjustment for better ergonomic positioning. Consequently, it is suitable for both home offices and corporate environments. The MSI PRO MP272L E2 27-inch business monitor delivers a balanced mix of comfort, clarity, and productivity-focused performance. Specifications: 27-inch Full HD (1920 × 1080) IPS display 100Hz refresh rate for smoother visuals Anti-flicker and low blue light eye-care technology Wide 178° viewing angles for consistent colors HDMI and DisplayPort connectivity with ergonomic tilt support
The MSI Pro MP225 21.5″ 100Hz Business Monitor is designed for professionals who need a reliable and efficient display. It offers clear visuals, smooth performance, and a sleek design for any workspace. Firstly with a 21.5-inch Full HD display, this monitor delivers sharp images and vibrant colors. The 100Hz refresh rate ensures smoother motion, reducing screen tearing and lag. This makes it ideal for office tasks, browsing, and even light gaming. Furthermore the MSI Pro MP225 Business Monitor features anti-flicker and blue light reduction technology. This reduces eye strain, making it comfortable for long hours of work. Whether you’re working on spreadsheets, writing reports, or attending video meetings, your eyes stay protected. Designed for seamless multitasking, this business monitor supports wide viewing angles for better screen visibility. The narrow bezel design maximizes screen space, making it great for multi-monitor setups. Connectivity is simple with HDMI and VGA ports, ensuring compatibility with various devices. You can easily connect it to laptops, desktops, and other peripherals. The easy-to-use on-screen display controls let you adjust brightness, contrast, and color settings effortlessly. The MSI Pro MP225 21.5″ Business Monitor is built with energy efficiency in mind. It consumes less power while maintaining excellent performance, making it an eco-friendly choice. The tilt-adjustable stand allows you to set the perfect viewing angle for comfort. It also supports VESA mounting, so you can save desk space by attaching it to a monitor arm or wall mount. For professionals looking for a budget-friendly, high-performance monitor, the MSI Pro MP225 21.5″ 100Hz Business Monitor is a top choice. It combines clarity, comfort, and functionality to enhance productivity at work. Specifications: Display : 21.5″ IPS Resolution : 1920×1080 FHD Refresh Rate : 100Hz Response Rate : 1ms
Huawei IdeaHub B2 IHB2-65PU 65-inch conferencing display delivers an advanced all-in-one solution for modern meeting rooms. It combines a 4K UHD touchscreen with smart collaboration tools to enhance productivity and communication. As a result, teams can present, write, and share ideas seamlessly across multiple platforms. Moreover, the zero-gap laminated IPS panel ensures sharp visuals and precise touch response. The infrared multi-touch system supports up to 20 touch points, while low latency writing creates a smooth and natural pen experience. In addition, smart handwriting recognition and annotation features improve brainstorming and note-taking efficiency. Furthermore, the device includes dual WiFi connectivity and wide compatibility with Android, Windows, iOS, and macOS systems. The built-in speakers deliver clear audio, and the multiple front and rear ports provide flexible connectivity for various devices. Therefore, it is ideal for presentations, video conferencing, and collaborative workspaces. Huawei IdeaHub B2 65-inch display offers powerful performance, seamless connectivity, and intelligent collaboration features for professional environments. Specifications: 65-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 Quad-core CPU with 4GB RAM and 32GB storage Wide connectivity including HDMI, USB, Type-C, and OPS port
Ultra Thin Arabic Keyboard Cover Skin for MacBook Pro 13 Inch 2022 2021 2020 (Apple M2 Chip/Apple M1 Chip A2338/A2289/A2251) and 2019 MacBook Pro 16 Inch (Model A2141) Protector (Black) Ultra Thin Arabic Keyboard Cover Skin for MacBook Pro 13 Inch 2022 2021 2020 (Apple M2 Chip/Apple M1 Chip A2338/A2289/A2251) and 2019 MacBook Pro 16 Inch (Model A2141) Protector (Black) About this item [√] COMPATIBLE WITH: (1) 2022 MacBook Pro 13-Inch with Apple M2 processor, (2) MacBook Pro 13-Inch 2021 2020 with Apple M1 processor (model: A2338), (3) MacBook Pro 13-Inch Early 2020 released (model: A2289/A2251) and (4) 2019 MacBook Pro 16-Inch (model: A2141) [√] MORE PROTECTION for KEYBOARD: waterproof, dust-proof and dirt-proof design can prevent liquid, dust, cigarette ash, biscuit crumbs falling onto your keyboard to affect your keyboard’s life. [√] ACCURATE KEYS: every key is specially molded, manufactured to the quality available. Flexible, this cover is easy to apply and remove for cleaning or disinfecting. [√] 0.26 MM/0.1 IN THICKNESS: ultra thin silicone keyboard cover skin, made it easier for typing. Soft keyboard protector can weaken the sound in typing. [√] 100% CUSTOMER SERVICE and MONEY BACK GUARANTEE: if you are not fully satisfied with the products you received, please feel free to contact us. We will provide you with a 100% customer service and money back guarantee.
The LG 32UR500K-B 32 Inch Monitor delivers large-screen clarity and detailed visuals for work, entertainment, and everyday computing. Its spacious 32-inch display provides an immersive viewing experience, making it ideal for productivity, content consumption, and multitasking. Moreover, the high-resolution panel ensures sharp images and vibrant colors, allowing users to enjoy clear visuals across various applications. This monitor offers wide viewing angles and accurate color reproduction, making it suitable for office tasks, media editing, and home entertainment. Additionally, the sleek and modern design fits easily into professional or home setups while maximizing desk space efficiency. The large screen size also allows users to work with multiple windows comfortably without constant switching. The LG 32UR500K-B includes multiple connectivity options, making it easy to connect PCs, laptops, and consoles. Furthermore, ergonomic tilt adjustments allow comfortable viewing during long work or entertainment sessions. Therefore, it is perfect for professionals, students, and home users seeking performance and comfort. Finally, it combines large-screen immersion, clarity, and modern design for everyday use. Specifications: 32-inch monitor for work and entertainment High-resolution display for clear visuals Wide viewing angles and accurate colors Multiple connectivity options Sleek and modern design
The Asus VP228HE 22″ 60Hz Gaming Monitor is designed for gamers who want smooth visuals and fast response times. It offers a great balance of performance and affordability for casual and competitive players. This gaming monitor features a 22-inch Full HD display with a 1920 x 1080 resolution. The screen delivers sharp visuals with vibrant colors, enhancing your gaming experience. The 60Hz refresh rate ensures smooth motion in fast-paced games. With a 1ms response time, the Asus VP228HE reduces motion blur and ghosting. This makes gameplay more responsive, giving you an advantage in action-packed games. The monitor also includes ASUS GamePlus technology with crosshair and timer functions for better accuracy. The Asus VP228HE 22″ 60Hz Gaming Monitor features ASUS Eye Care technology. It includes a flicker-free display and a blue light filter to reduce eye strain. You can game for longer periods without discomfort. For connectivity, this monitor includes HDMI and VGA ports, making it compatible with gaming consoles, PCs, and laptops. It provides flexibility for different gaming setups. The built-in speakers deliver clear sound, eliminating the need for external speakers. The gaming monitor has a sleek and compact design that fits any setup. It is lightweight and easy to adjust, ensuring comfortable viewing angles. The durable build ensures long-lasting performance. If you need a reliable and affordable gaming monitor, the Asus VP228HE 22″ 60Hz Gaming Monitor is a great choice. It delivers smooth visuals, fast response times, and eye care features for comfortable gaming. Specifications: Display : 22″ TN Resolution : 1920×1080 Refresh Rate : 60Hz Response Rate : 1ms Speaker : 1.5W x2
Looking for a high-quality monitor to elevate your viewing experience? Meet the BenQ EW3270U 32″ 4K HDR Monitor. With its impressive 4K resolution, every detail comes to life with stunning clarity. Firstly, let’s talk about the brilliance of HDR technology. Experience richer colors and deeper contrasts that make images and videos pop off the screen. Whether you’re watching movies, gaming, or editing photos, HDR brings content to life like never before. Moreover, the spacious 32-inch screen provides ample space for multitasking and immersive entertainment. Whether you’re working on spreadsheets or enjoying your favorite games, you’ll appreciate the expansive display and crisp visuals. Additionally, the BenQ EW3270U offers advanced eye care features to reduce eye strain during long hours of use. With flicker-free technology and low blue light modes, you can enjoy extended viewing sessions comfortably. Furthermore, connectivity options abound with multiple ports, including HDMI, DisplayPort, and USB-C. Easily connect your devices and enjoy seamless integration with laptops, desktops, gaming consoles, and more. In conclusion, the BenQ EW3270U 32″ 4K HDR Monitor is the perfect choice for those seeking superior visual quality and immersive viewing experiences. Whether you’re a professional creator or a casual user, this monitor delivers unmatched performance and versatility. Upgrade your setup today and see the difference for yourself. Specifications: Display : 31.5″ VA HDR 10 Resolution : 4K UHD Refresh Rate : 60Hz Response Rate : 4 ms Built-in Speaker : 2Wx2
