The MSI MAG 255XFV 25″ FHD 250Hz Gaming Monitor is built for fast-paced competitive gaming. It features a 24.5-inch Full HD (1920×1080) Rapid VA panel with a 250Hz overclocked refresh rate for ultra-smooth motion. Additionally, it delivers a 0.5ms (GtG) response time, reducing motion blur in fast scenes. The monitor also uses Adaptive-Sync technology to reduce screen tearing and stuttering during gameplay. Therefore, the MSI MAG 255XFV 25″ FHD 250Hz Gaming Monitor is designed for responsiveness, speed, and smooth visual performance in competitive titles. Moreover, it includes MSI gaming features such as AI Vision, Less Blue Light, and Anti-Flicker technology for improved viewing comfort. Specifications: 24.5-inch Full HD (1920×1080) Rapid VA panel 250Hz (OC) refresh rate for ultra-smooth gameplay 0.5ms (GtG) fast response time for reduced blur Adaptive-Sync technology for tear-free visuals MSI AI Vision, Anti-Flicker, and Less Blue Light support
Battery Model: A1493 A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 ; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 100% Brand New, Battery Type: Li-Polymer; Capacity: 71.8Wh; Voltage:11.34V; Package include two free screwdriver Compatible:A1502 A1493 (Only for Late 2013, Mid 2014 Version) Apple MacBook Pro 13″ Retina ME864LL/A ME866LL/A ,MacBook Pro “Core i5″ 2.4/2.5 13” Late 2013 Retina Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety.
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 (3840 × 2160) IPS display with zero-gap laminated glass Infrared multi-touch supporting up to 20 touch points Low latency writing (25 ms) with smart handwriting recognition Dual WiFi (2.4GHz and 5GHz) with multi-OS compatibility Multiple ports including HDMI, USB, Type-C, RJ45, and OPS support
The Samsung Crystal UHD U8000F 65″ 4K TV UA65U8000FUXTW uses a 65-inch LCD panel with 3840 × 2160 resolution. It delivers standard 4K performance for everyday viewing. Samsung uses the Crystal Processor 4K for image processing and upscaling. As a result, lower-resolution content converts closer to 4K output. In addition, the TV supports HDR10 and HDR10+, which improve contrast between bright and dark scenes. The display runs at a 60 Hz refresh rate. Also, Motion Xcelerator reduces blur in fast motion content such as sports and action. Samsung equips the TV with Tizen OS. Therefore, users access streaming apps, SmartThings features, and basic voice control options depending on setup. Connectivity includes HDMI, USB, Wi-Fi, Bluetooth, Ethernet LAN, and optical audio output. In addition, the TV supports ALLM for basic gaming response time. This model focuses on 4K resolution, standard HDR support, and essential smart features without advanced gaming or local dimming systems. Specifications: 65-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
COMPACT AND WIRELESS Enjoy the freedom of wireless with this versatile combo. The compact keyboard is equipped with a number pad ideal for data entry, calculations and navigation, so you can get more work done in less space. The ambidextrous mouse delivers smooth tracking and scrolling, for easy navigation -at home or at work. COMPACT AND WIRELESS Enjoy the freedom of wireless with this versatile combo. The compact keyboard is equipped with a number pad ideal for data entry, calculations and navigation, so you can get more work done in less space. The ambidextrous mouse delivers smooth tracking and scrolling, for easy navigation -at home or at work. Height: 112 mm Width: 381 mm Depth: 17.78 mm Weight: 320 g Height: 107 mm Width: 60 mm Depth: 40 mm Weight: 112 g 10-Key Number pad Music Controls Up to 5 million keystrokes (excludes number lock key) Key type: Deep-profile Spill-resistant 2Tested under limited conditions (maximum of 60 ml liquid spillage). Do not immerse the keyboard in liquid. 2 AAA batteries (Alkaline Batteries) Sensor Technology: Smooth Optical Tracking Number of Buttons: 3 (Left/Right-click, Middle click) Scrolling: line-by-line Scroll Wheel: Yes, optical 2 AA batteries (Alkaline batteries) Windows® 10,11 or later ChromeOS An available USB ports
The Asus TUF Gaming VG24VQER 24″ FHD 180Hz Curved Monitor offers smooth and responsive gameplay. It delivers sharp Full HD visuals with strong clarity. The curved screen pulls you into the action. This creates a more immersive gaming experience. Moreover, the Asus TUF Gaming 24″ FHD 180Hz Curved Monitor features a fast 180Hz refresh rate. This reduces motion blur during fast scenes. It also improves reaction time in competitive games. Every frame appears clean and stable. In addition, the monitor includes Adaptive Sync support. This helps remove screen tearing and stuttering. Your gameplay stays smooth even during heavy movement. This makes every moment feel more controlled. Furthermore, the Asus TUF Gaming VG24VQER 24″ FHD 180Hz Curved Monitor offers a curved VA panel. The colors look rich and deep on the screen. The contrast levels stay strong during dark scenes. This enhances your overall viewing quality. Also, the monitor features eye-care technology. It reduces blue light and screen flicker. This helps protect your eyes during long gaming hours. You can play or work more comfortably. The design of the Asus TUF Gaming 24″ FHD 180Hz Curved Monitor looks modern and clean. The stand feels stable and adjustable. You can tilt the screen for better viewing comfort. This makes it great for gaming desks and home setups. Overall, the Asus TUF Gaming VG24VQER 24″ FHD 180Hz Curved Monitor delivers smooth motion, bright visuals, and immersive gameplay. It offers strong performance for competitive players. It is an excellent option for gamers who want speed, comfort, and quality in one monitor. Specifications: Display : 24″ VA Resolution : FHD Refresh Rate : 180Hz Response Time : 1ms Curvature : 1500R
The HP Omen 27″ FHD 165Hz Gaming Monitor delivers smooth, sharp visuals for gaming and everyday use. Its Full HD resolution (1920×1080) shows crisp details in games, videos, and work tasks. The 27-inch screen provides ample space for immersive gameplay or multitasking. This helps you stay focused and engaged. Moreover, the HP Omen 27″ FHD 165Hz Gaming Monitor features a fast 165 Hz refresh rate. This high refresh rate makes motion look fluid and clean on screen. Fast-paced games and action scenes appear smoother and more responsive. This reduces blur and improves reaction time during gameplay. In addition, the monitor offers a 1 ms gray-to-gray response time (with overdrive). This helps reduce ghosting and keeps fast movements clear and sharp. Your controls feel more responsive, which is ideal for competitive games. The monitor also supports adaptive sync technology to cut screen tearing and stutter. Furthermore, the HP Omen 27″ FHD 165Hz Gaming Monitor uses an IPS panel that gives wide viewing angles and good color accuracy. Colors stay consistent even when viewed from sides. This helps when you are reading, editing, or sharing your screen with others. Also, the monitor includes eye-comfort features to ease long sessions. A low-blue-light mode helps reduce eye strain during extended gaming or work hours. The anti-glare screen surface helps in bright rooms too. The design of the HP Omen 27″ FHD 165Hz Gaming Monitor is modern and clean with thin bezels. It fits well on desks of different sizes. The stand is adjustable for comfortable viewing angles, and the build feels sturdy and stable. Overall, the HP Omen 27″ FHD 165Hz Gaming Monitor combines speed, clarity, and comfort. It enhances both gaming performance and daily computing tasks. This monitor is ideal for gamers and users wanting a balanced, responsive, and reliable display. Specifications: Display : 27″ IPS Resolution : 1920×1080 Refresh Rate : 165Hz Response Time : 1ms
Late 2019 Apple MacBook Pro with 2.4GHz Intel Core i9 (16 inch, 16GB, 1TB SSD) 4GB AMD Radeon Pro 5500M Space Gray
The Lenovo G34W-30 34″ Monitor delivers immersive visuals and smooth performance for gaming, streaming, and multimedia.It features a 34-inch WQHD curved display that shows sharp details and vibrant colors. Moreover, its high refresh rate ensures fluid motion during fast-paced games. This monitor uses a VA panel for strong contrast and wide viewing angles. Additionally, the fast response time reduces blur and ghosting for competitive gaming. The curved design and anti-glare screen enhance immersion and reduce reflections in bright environments. HDMI and DisplayPort inputs allow easy connection to PCs, laptops, and gaming consoles. Furthermore, tilt adjustment lets you find a comfortable viewing angle during long sessions. Low blue light and flicker-free technologies help reduce eye strain over extended use. This display is ideal for gamers, streamers, and home users. Therefore, it supports competitive gaming, media streaming, and productivity tasks. Finally, it combines immersive visuals, fast performance, and comfort features for daily use. Specifications: Screen Size: 34″ WQHD curved VA panel Resolution: 3440 × 1440 Refresh Rate: High for smooth motion Ports: HDMI + DisplayPort Features: Anti-glare, low blue light, flicker-free eye care
Looking for a monitor that enhances your gaming and multimedia experience? Look no further than the AOC 27B2HM2. With its 27-inch screen size and 100Hz refresh rate, it offers a captivating viewing experience. Transitioning to performance, the 100Hz refresh rate ensures smooth and fluid visuals, eliminating motion blur and screen tearing. Whether you’re gaming, streaming, or watching movies, every frame is displayed with precision and clarity. Moreover, the monitor’s Full HD resolution delivers crisp details and vibrant colors, bringing your content to life. Dive into your favorite games or immerse yourself in cinematic adventures with stunning clarity and realism. In terms of design, the AOC 27B2HM2 features a sleek and modern aesthetic that complements any gaming setup or workspace. Its slim bezels maximize screen real estate, providing an expansive viewing area without distractions. Furthermore, with multiple connectivity options including HDMI and VGA ports, this monitor offers versatility and compatibility with a wide range of devices. Easily connect your gaming console, PC, or laptop and enjoy immersive entertainment. In conclusion, the AOC 27B2HM2 27″ 100Hz Monitor is the perfect choice for gamers and multimedia enthusiasts seeking exceptional performance and stunning visuals. Elevate your viewing experience to new heights with this feature-packed monitor. Specifications: Display : 27″ VA Resolution : 1920 × 1080 (FHD) Refresh Rate : 100Hz Response Rate : 4ms
Arabic Language Silicone Keyboard Cover Skin for MacBook Air 13" Macbook Pro with / without Retina Display 13"15" 17" MC184LL/B, NOT COMPATIBLE WITH NEW MacBook Air 13” A1932 (Black) Arabic Language Silicone Keyboard Cover Skin for MacBook Air 13″ Macbook Pro with / without Retina Display 13″15″ 17″ MC184LL/B, NOT COMPATIBLE WITH NEW MacBook Air 13” A1932 (Black) About this item Only compatible with MacBook Air 13″ (Model: A1369 & A1466) , MacBook Pro 13-Inch with DVD Drive (Model: A1278), Pro 13 inch with Retina Display (Model: A1425 & A1502), Pro 15 inch with DVD Drive (Model: A1286), Pro 15 inch with Retina Display (Model: A1398), Pro 17 inch (Model: A1297) and Apple Wireless Bluetooth Keyboard MC184LL/B (A1314). NOT COMPATIBLE WITH NEWEST MacBook Air 13″ 2018 (Model: A1932) Fit for American Version( “Enter” key is a rectangle), DO NOT FIT FOR Europe Version (“Enter” key looks like “7”) Extra slim silicone skin, made it easier for typing. Soft silicone can ELIMINATE THE SOUND when typing FLEXIBLE, WASHABLE, easy to apply and remove for cleaning or disinfecting. Manufactured to the highest quality available, Ultra thin design lets you open and close your computer without any affection
LG 22 inch HD LCD Monitor E2290V is designed for clear visuals, slim styling, and daily home or office use. It features a 21.5-inch LED display with Full HD 1080p resolution for sharp picture quality. Additionally, it uses an ultra-slim 7.2mm design with LED backlighting. Therefore, it works well for productivity, media viewing, and general computer tasks. The LG 22 inch HD LCD Monitor E2290V delivers 1920 × 1080 resolution with a 5ms response time and 250 cd/m² brightness. Moreover, it includes a 10,000,000:1 dynamic contrast ratio for deeper image detail. It supports HDMI, DVI-D, D-Sub, and headphone out for flexible connectivity. Furthermore, the monitor includes tilt adjustment and anti-glare surface treatment for better comfort during long sessions. In addition, it supports Full HD viewing with 16.7 million colors and ENERGY STAR qualification. As a result, users get a stylish and practical display for everyday use. Specifications: 21.5-inch Full HD 1920 × 1080 LED display Ultra-slim 7.2mm monitor design 5ms response time with 250 cd/m² brightness HDMI, DVI-D, D-Sub, and headphone out Tilt adjustment with anti-glare screen surface
Smooth, precise, and completely wireless. The Apple Magic Trackpad brings the best laptop navigation to your desktop. Available in both White and Black, it features a large glass surface, Force Touch technology for deeper control, and a modern USB-C port for easy charging. It connects instantly to your Mac or iPad and keeps running for a month or more on a single charge. Make navigating your computer effortless with the Apple Magic Trackpad (A3120). Designed with a wide, smooth glass surface, it lets you swipe, scroll, and zoom using the same natural hand gestures you use on a laptop. It is the perfect tool to keep your desk clean and your workflow productive. Key Features: Force Touch: Built-in sensors know how hard you press, letting you click deeper to open previews, look up definitions, and reveal hidden menus. Large Glass Surface: The spacious edge-to-edge design gives you plenty of room to scroll through large documents or edit photos comfortably. Updated with USB-C: Now features a universal USB-C port for charging and pairing, matching all your modern cables. Long Battery Life: The built-in rechargeable battery lasts about a month or more before needing a quick recharge. Easy Setup: Pairs automatically with your Mac via Bluetooth right out of the box, with no complicated configuration needed. Sleek Colors: Choose between classic White or premium Black to perfectly match your desktop setup. Specifications at a Glance: Model: A3120 Colors: White / Black Connection: Wireless / Bluetooth / USB-C Surface: Premium Edge-to-Edge Glass Compatibility: Mac and iPad
WiWU Linker 721HD Hub – Compact USB-C hub with 7 ports including 100W PD, dual USB-A, USB-C data, HDMI 4K60, and dual SD/TF slots.Aluminum body, plug‑and‑play compatibility with MacBooks and modern USB‑C devices—ideal for laptop expansion. Model: Linker 721HD (WiWU) Material: Aluminum-alloy shell Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Ports: 2 × USB‑A 3.1 1 × USB‑C 3.1 (data) 1 × USB‑C PD power delivery (up to 100 W) 1 × HDMI (4K @ 60 Hz) SD card slot + micro‑SD (TF) slot (USB 3.0 speed) Cable: Fixed USB‑C male cable (approx. 15 cm) Compatibility: Plug-and-play with USB-C/Thunderbolt 3/4 devices (MacBook, XPS, Chromebooks, mobile devices with DP-Alt Mode) Design: Compact, space gray finish optimized for travel/work setups Weight: ~150 g
The ASUS VG34VQL3A Curved Gaming Monitor, 34″ WQHD delivers immersive gaming and smooth visuals for modern PC players. It is designed for gamers, creators, and anyone who wants a wider view and fast performance. First, this monitor features a 34-inch Ultra-Wide QHD (3440 × 1440) curved display with a 1500R curvature that wraps around your vision and feels more natural. As a result, games, movies, and multitasking feel more engaging. In addition, the ASUS VG34VQL3A supports a high refresh rate up to 180 Hz (OC) and a 1 ms response time (GTG) for smooth motion and minimal blur. This helps you react faster in fast-paced games. This model also uses AMD FreeSync Premium Pro for adaptive sync technology that reduces screen tearing and stuttering in supported games. Therefore, visuals stay smooth and clear with compatible GPUs. The screen covers 125% of the sRGB color gamut and supports DisplayHDR™ 400 with HDR10, giving bright highlights and rich contrast for vivid colors in HDR content. Thus, games and movies look more dynamic. Because the panel uses VA technology, it delivers deep contrast and solid black levels that make details pop in dark scenes. Also, the anti-glare coating helps reduce reflections in bright rooms. The ASUS VG34VQL3A includes built-in features like Picture-in-Picture (PiP), Picture-by-Picture (PbP), ASUS GamePlus, and low blue light modes for added convenience and comfort. This makes it versatile for work and play. Connectivity options include DisplayPort 1.4, HDMI 2.0, and USB 3.2 Gen 2 hub ports to link to PCs, laptops, and peripherals easily. As a result, setup stays flexible for many systems. The ergonomic stand offers height, tilt, and swivel adjustments plus VESA mount support, so you can position the monitor comfortably. This helps reduce neck and eye strain during long sessions. In conclusion, the ASUS VG34VQL3A Curved Gaming Monitor, 34″ WQHD combines speed, clarity, and wide ultrawide visuals. Overall, it is a strong choice for immersive gaming and productivity. Specifications: Display :34″ VA Panel, 1500R Curved, Anti-Glare. Resolution :Ultrawide QHD (3440 x 1440). Refresh Rate : Up to 180Hz (OC) for smooth motion. Response Time : 1ms (GTG) for reduced ghosting. HDR: Display HDR 400 with HDR10 support for enhanced contrast.
WIWU GENIUS COMBO SET BAG WITH MOUSE AND MOUSE PAD FOR 14" LAPTOP/ULTRABOOK - BLACK WIWU GENIUS COMBO SET BAG WITH MOUSE AND MOUSE PAD FOR 14″ LAPTOP/ULTRABOOK – BLACK Details: Material: plaid polyester + metal Mouse: single mode 2.4G Product weight: 14 inch / 465g Product size: 14 inches: 35*25*2cm Handbag+mouse+mouse pad Front layer multi-pocket design Better help classify items Waterproof fabric
The Samsung 75″ QLED Q8F 4K Vision AI Smart TV (2025) | QA75Q8FAAUXTW delivers a premium viewing experience with advanced QLED display technology. It produces bright, sharp, and colorful images, so movies, sports, and games look highly immersive on the large 75-inch screen. QLED technology uses Quantum Dot enhancement to improve color accuracy and brightness performance. As a result, visuals appear more vibrant and balanced in both dark and bright scenes. This helps maintain consistent picture quality across different types of content and lighting conditions. Vision AI enhances picture and sound in real time. It analyzes each scene and automatically adjusts brightness, sharpness, and color for optimal viewing. Therefore, the TV consistently delivers improved visuals without manual tuning. In addition, AI upscaling improves lower-resolution content closer to 4K quality for better clarity and detail. HDR support expands contrast and color depth, making visuals more dynamic and lifelike. Fast motion handling also improves clarity, which enhances sports and action content by reducing blur and improving smoothness. The Smart TV platform provides easy access to streaming apps, gaming features, and smart home controls. It runs smoothly and allows quick switching between apps. In addition, the slim design with thin bezels gives the Samsung 75 QLED Q8F 4K Vision AI Smart TV (2025) | QA75Q8FAAUXTW a modern and premium appearance for large living spaces. Overall, this Samsung QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful home entertainment experience. Specifications: QLED technology delivers bright and vibrant picture quality 75-inch 4K display provides immersive viewing experience Vision AI enhances picture and sound automatically in real time HDR improves contrast, brightness, and color depth Smart TV platform supports apps, streaming, and smart features
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
2022 Original New 13" A2681 LCD Screen for MacBook Air M2 EMC 4074 A2681 LCD Screen Replacement 2022 Original New 13″ A2681 LCD Screen for MacBook Air M2 EMC 4074 A2681 LCD Screen Replacement Compatible Model: For MacBook Air 13″ M2 A2681 Screen Display Replacement 2022 Year (Silver) Item Condition: New; Screen Size: 13.6″; Resolution: 2560×1664; Color: Silver.(This is the display replacement accessory is not a laptop) Note: Please be careful to take the screen out of the box. This product should be very careful when installed, we are not responsible for the damage in the process of installation. Please confirm the model and color before buying, do not buy the wrong product. If you have any questions, please get in touch with us.
The Philips 242V8 24″ 75Hz Monitor is a great choice for home and office use. It delivers clear visuals and smooth performance. With its Full HD resolution, you can enjoy sharp and detailed images. This 24-inch monitor features a 75Hz refresh rate for fluid motion. It reduces screen tearing and stuttering, making it ideal for everyday tasks and casual gaming. The fast response time ensures smooth transitions between frames. The Philips 242V8 24″ 75Hz Monitor uses SmartContrast technology for deep blacks and bright whites. It enhances image quality, making videos and images look better. The IPS panel provides wide viewing angles with consistent colors. With Flicker-Free technology, this 75Hz monitor reduces eye strain. It also includes LowBlue Mode to minimize harmful blue light. This makes it comfortable for long hours of use. Connectivity is simple with HDMI and VGA ports. You can easily connect it to your PC, laptop, or gaming console. The setup is quick and hassle-free. The Philips 242V8 24″ 75Hz Monitor has a slim and modern design. It fits well in any workspace, whether at home or in the office. The adjustable tilt stand provides a comfortable viewing experience. This Full HD monitor is energy-efficient, helping you save on power consumption. It meets eco-friendly standards while delivering high performance. In conclusion, the Philips 242V8 24″ 75Hz Monitor is a reliable and affordable display. It offers smooth visuals, eye comfort, and a sleek design, making it a perfect choice for work and entertainment. Specifications: Display : 24″ IPS Resolution : 1920×1080 Refresh Rate : 75Hz Response Rate : 4ms Speaker : 2W x2
