RAM CRUCIAL 8GB 2666 DDR4 NOTEBOOK About this item Improve your system’s responsiveness, run apps faster and multitask with ease Good Quality with a high end Crucial RAM CB8GS2666 8GB DDR4 2666 MHz Laptop Memory Easy to use
The LG 34WQ650-W UltraWide 34-inch 100Hz Full HD IPS Monitor delivers immersive visuals and smooth performance for work, entertainment, and gaming. Its large 34-inch ultra-wide screen gives you extra space to multitask, watch movies, and play games with a broader field of view. Moreover, the Full HD resolution ensures clear and detailed images so your content looks sharp and vibrant. This monitor features an IPS panel that provides wide viewing angles and consistent color accuracy from nearly every angle. Additionally, the 100Hz refresh rate offers smoother motion compared to standard monitors, making gameplay and video playback feel more fluid. The sleek white design fits modern setups, whether in home offices, workstations, or gaming desks. The LG 34WQ650-W includes multiple connectivity options, making it easy to connect laptops, PCs, and consoles. Furthermore, the ergonomic tilt adjustment helps maintain comfortable viewing positions during long sessions. Therefore, it is ideal for students, professionals, and casual gamers seeking a versatile and immersive display. Finally, it combines wide visuals, smooth performance, and practical design for everyday use. Specifications: 34″ UltraWide Full HD IPS monitor 100Hz refresh rate for smooth motion Wide viewing angles with accurate colors Sleek white design with versatile connectivity Ideal for work, entertainment, and gaming
The ViewSonic XG2709A 27″ 240Hz Gaming Monitor is built for competitive gamers who need top-tier performance and responsiveness. With a blazing 240Hz refresh rate, it delivers ultra-smooth visuals in every frame. A 1ms MPRT response time ensures fast and accurate performance, helping reduce motion blur and ghosting during intense action. The Full HD resolution brings sharp details, making it perfect for gaming and daily use. Its SuperClear® IPS panel offers wide viewing angles and rich, vibrant colors. This means no matter where you sit, your screen will always look great. The ViewSonic XG2709A 27″ 240Hz Gaming Monitor features AMD FreeSync™ technology, which eliminates screen tearing and stuttering for smooth, uninterrupted gameplay. HDR10 support brings better brightness and contrast to your visuals, making dark scenes deeper and bright scenes more vivid and clear. It gives games and videos more depth and realism. Multiple input options like HDMI and DisplayPort let you connect to PCs, gaming consoles, and other devices with ease. A 3.5mm audio out port is also available for external speakers or headphones. The stand is fully adjustable, offering tilt, swivel, height, and pivot functions to keep you comfortable. It’s also VESA compatible for wall or arm mounting. Its anti-glare screen reduces reflections, making long gaming sessions easier on your eyes. The sleek, modern design fits into any setup with ease. In conclusion, the ViewSonic XG2709A 27″ 240Hz Gaming Monitor offers speed, comfort, and vibrant visuals, making it a top choice for serious gamers. Specifications: Display : 27″ IPS Resolution : 1920 x 1080 FHD Refresh Rate : 240Hz Response Rate : 1ms MPRT Height Adjust (mm): 130
The Samsung 75″ Neo QLED QN70F 4K Vision AI Smart TV QA75QN70FAUXTW delivers a premium viewing experience with advanced Neo QLED technology. It produces bright, sharp, and highly detailed images with strong contrast, so movies, sports, and games look more immersive on the 75-inch screen. Neo QLED technology uses Quantum Mini LEDs to improve brightness control and contrast accuracy. As a result, dark scenes appear deeper while bright scenes stay vivid and balanced. This creates a more realistic picture 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 settings. 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. 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 75 Neo QLED QN70F 4K Vision AI Smart TV QA75QN70FAUXTW a modern and premium look. Overall, this Samsung Neo QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful entertainment experience. Specifications: Neo QLED technology delivers bright and detailed picture quality 75-inch 4K display provides immersive viewing experience Vision AI optimizes picture and sound automatically HDR improves contrast, brightness, and color depth Smart TV platform supports apps, streaming, and smart features
The Samsung 65″ Neo QLED QN70F 4K Vision AI Smart TV QA65QN70FAUXTW delivers a premium viewing experience with advanced Neo QLED technology. It produces bright, sharp, and highly detailed images with strong contrast, so movies, sports, and games look clear and immersive on the 65-inch screen. Neo QLED technology uses Quantum Mini LEDs to improve brightness control and contrast accuracy. As a result, dark scenes appear deeper while bright scenes stay vivid and balanced. This creates a more realistic picture 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 settings. 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. 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 65 Neo QLED QN70F 4K Vision AI Smart TV QA65QN70FAUXTW a modern and premium appearance. Overall, this Samsung Neo QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful entertainment experience. Specifications: Neo QLED technology delivers bright, sharp, and detailed visuals 65-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
Are you seeking a more immersive and intuitive computing experience? Look no further than the ViewSonic 22” IR Touch Monitor. This cutting-edge display redefines interaction with its seamless touch functionality. Let’s start with responsiveness. The IR touch technology ensures swift and accurate touch responses, making navigation a breeze. Whether you’re scrolling through documents or playing interactive games, every touch is effortlessly detected. Additionally, the monitor’s sleek design and compact size make it perfect for any workspace. Its slim bezel and adjustable stand provide versatility, allowing you to customize your viewing angle for maximum comfort. Transitioning to visuals, prepare to be captivated by vibrant colors and sharp details. The Full HD resolution delivers crisp images, whether you’re watching movies, browsing photos, or working on creative projects. Furthermore, the monitor’s anti-glare coating reduces reflections, ensuring clear visibility even in brightly lit environments. Say goodbye to distracting glare and hello to uninterrupted viewing pleasure. Moreover, connectivity options such as HDMI and VGA ensure compatibility with a wide range of devices, from laptops to gaming consoles. Seamlessly switch between tasks or devices with ease, enhancing productivity and convenience. In conclusion, the ViewSonic 22” IR Touch Monitor offers an unparalleled touch experience. With its responsive touch technology, stunning visuals, and versatile design, it’s the perfect addition to any home or office setup. Upgrade your interaction today and discover a new level of computing convenience. Specifications: Display : 22″ Panel Type : TN Resolution : 1920×1080 FHD Response Time : 5ms Refresh Rate : 75Hz
LG UHD 4K 27″ Standing screen display size 27 Inches Screen Resolution 3840 x 2160 Max Screen Resolution 3840 x 2160 Pixels Brand LG Series 27UL500-W Item model number 27UL500-W Item Weight 11.2 pounds Product Dimensions 8.2 x 24.5 x 18.1 inches Item Dimensions LxWxH 8.2 x 24.5 x 18.1 inches Color White Power Source AC Manufacturer LG Language English ASIN B07PGL2WVS Country of Origin China Date First Available March 1, 2019 MONITOR RESOLUTION: 3840×2160 SIZE: 27″ MONITOR REFRESH RATE: 60Hz SYNC: Free-Sync CONNECTOR TYPE: HDMI CONNECTOR TYPE: DisplayPort LG UHD 4K 27″ n-Plane Switching (IPS) Panel. HDMI | DisplayPort Inputs. 3840 x 2160 4K UHD Resolution. 1000:1 Static Contrast Ratio. 300 cd/m² Brightness. 178°/178° Viewing Angles. 5 ms Response Time (GtG) 1.07 Billion Colors. Brand LG Screen Size 27 inch Resolution 3840 x 2160 pixels Display Technology IPS Screen Surface Matte Refresh Rate 60 Hz Response Time 5 ms Viewing Angle 178° Brightness 300 cd/m2 Contrast Ratio 1000:1 Connectivity HDMIDisplay Port Device Dimensions (WxHxD) 24.5 x 18.1 x 8.2 inch Features FreesyncHeadphone OutVesa Mountable Weight 11.3 pounds This IPS computer monitor helps keep colors consistent at a wide viewing angle while reproducing 98 percent coverage of the sRGB color spectrum. Color Calibration helps maintain accurate color on the screen and prevents gradual changes. For More Information Click Here For More LG Monitors Click Here Specifications: LG UHD 4K 27″ Standing screen display size 27 Inches Screen Resolution 3840 x 2160 Max Screen Resolution 3840 x 2160 Pixels Brand LG Series 27UL500-W Item model number 27UL500-W 1 Year Warranty Manufacturer link
A compact and reliable pre-owned Lenovo ThinkPad L390 with 13.3" display, 8th Gen Core i7, 8GB RAM, and 256GB SSD—ideal for mobile professionals and students who need performance and portability in a durable business laptop.
The Samsung Odyssey G30D 27″ FHD 180Hz Gaming Monitor delivers smooth, fast visuals for games and everyday use. Its Full HD (1920×1080) resolution shows clear detail in games, videos, and work. The 27-inch screen gives you a large viewing area for wide action and immersive gameplay. This helps you see more and stay focused. Moreover, the Samsung Odyssey G30D 27″ FHD 180Hz Gaming Monitor features a high 180 Hz refresh rate. This high refresh rate makes motion fluid and clean on screen. Fast games and action scenes appear more detailed and responsive. In addition, the monitor offers a rapid 1 ms (MPRT) response time. This helps reduce ghosting and keeps fast visual shifts clear. Controls and movement feel precise and snappy. This enhances gameplay performance in fast shooters or racing games. Furthermore, the Samsung Odyssey G30D 27″ FHD 180Hz Gaming Monitor uses a VA panel with strong contrast (3000:1) and decent brightness (250 cd/m²). This delivers deeper blacks and vivid colors, improving visual quality for games and movies. It also covers around 95% sRGB for solid color representation. Also, the monitor supports adaptive sync with AMD FreeSync to reduce screen tearing and stutter when paired with compatible graphics cards. A slim 3-sided borderless design gives a clean modern look, and the ergonomic stand allows height, tilt, and swivel adjustments for comfortable use. Overall, the Samsung Odyssey G30D 27″ FHD 180Hz Gaming Monitor offers strong value by combining speed, clarity, and comfort. It suits gamers and everyday users who want smooth gameplay, responsive controls, and a clear large display. It is a solid choice for fast-paced games, casual gaming, and general computer use. Specifications: Display : 27″ VA Resolution : FHD (1920 x 1080) Refresh Rate : 180Hz Response Time : 1ms
Remax F27 Fonzyr Desktop Fan – 5 W rechargeable fan with 360° adjustable airflow and multi-installation options.Compact (187×206 mm), lightweight, with fast Type-C charging (~2 h) and built-in 1,200 mAh battery. Model: Remax F27 Fonzyr Series Circulation Desktop Fan Power: 5 W, operates on 5 V/1 A power supply Rotation: 360° adjustable airflow for full-range ventilation Battery: Built-in 1,200 mAh rechargeable battery; Type-C charging, ~2 hours charging time Dimensions & Build: Approx. 187 × 206 mm, lightweight ABS plastic housing (~697 g) Installation: Designed for desktop use, wall mounting, or hanging—ideal for multi-location placement
The MSI MAG 272URDF E16 27″ UHD, 160 Hz Flat Rapid IPS, 0.5 ms gaming monitor delivers strong performance and sharp visuals for gamers, creators, and everyday users. It is designed to provide fast refresh rates with crisp 4K resolution for smooth action and detailed images. First, this monitor features a 27-inch Rapid IPS panel with a 3840 × 2160 (UHD) resolution that shows rich detail and vibrant colors. As a result, games and media look clear and immersive. In addition, the MSI MAG 272URDF E16 supports up to 160 Hz refresh rate at 4K for smoother motion and reduced blur compared to standard screens. This high refresh rate helps competitive gameplay feel responsive. The 0.5 ms (GtG) response time helps reduce ghosting and motion blur in fast scenes. Therefore, action appears sharper and more accurate during gaming or videos. This monitor also includes Adaptive-Sync to help eliminate screen tearing with compatible GPUs. So, gameplay and graphics feel more fluid. Moreover, the display supports VESA DisplayHDR 400 for better contrast and dynamic range when HDR content is available. As a result, highlights and shadows look more vivid and realistic. The MSI MAG 272URDF E16 provides wide viewing angles of 178° horizontal and vertical, so colors stay accurate even when viewed from the side. This helps when multiple people watch the screen. For connectivity, it includes 2× HDMI 2.1 and 1× DisplayPort 1.4a, allowing 4K at 160 Hz and support for next-gen consoles and PC graphics cards. Thus, you can switch between devices easily. Also, the monitor offers USB ports and a headphone jack for added convenience. This makes connecting peripherals simple. Compared to standard 60 Hz screens, this MSI model delivers smoother motion, higher refresh rates, and sharper details at 4K. So, both gaming and creative work feel more enjoyable. In conclusion, the MSI MAG 272URDF E16 blends 4K clarity, fast refresh, and quick response for strong overall performance. Overall, it is a great option for gamers, content creators, and anyone who wants a premium 4K gaming display. Specifications: Display: 27″ Rapid IPS, Flat, 16:9 aspect ratio, UHD (3840×2160) Resolution :(3840×2160) UHD Refresh Rate : 160Hz Response Time : Response Time: 0.5ms (GtG) for smooth visuals.
The Samsung 55″ Neo QLED QN70F 4K Vision AI Smart TV QA55QN70FAUXTW delivers a premium viewing experience with advanced Neo QLED technology. It produces bright, sharp, and detailed images with strong contrast, so movies, sports, and games look clear and immersive on the 55-inch screen. Neo QLED technology uses Quantum Mini LEDs to improve brightness control and contrast accuracy. As a result, dark scenes appear deeper while bright scenes stay vivid and balanced. This creates a more realistic picture 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 settings. 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. 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 55 Neo QLED QN70F 4K Vision AI Smart TV QA55QN70FAUXTW a modern and premium appearance. Overall, this Samsung Neo QLED TV combines strong brightness performance, AI optimization, and smart connectivity for a powerful entertainment experience. Specifications: Neo QLED technology delivers bright, sharp, and detailed picture quality 55-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
The MSI MAG 274QRFW X32 is a 27-inch gaming monitor designed for fast-paced gaming. It features a 320Hz refresh rate, providing ultra-smooth motion for competitive play. Furthermore, its high-quality panel delivers vibrant colors and clear visuals for immersive gameplay. The monitor supports a 1ms response time, reducing motion blur and ghosting. In addition, adaptive sync technology ensures smooth performance without screen tearing. Gamers can enjoy both fast reactions and detailed graphics during intense sessions. It includes multiple connectivity options such as DisplayPort and HDMI, allowing easy connection to PCs and consoles. Moreover, ergonomic adjustments let users tilt, swivel, and adjust height for comfortable long gaming sessions. As a result, the MSI MAG 274QRFW X32 enhances both performance and comfort. This monitor combines speed, visual clarity, and ergonomic design, making it ideal for competitive and casual gamers alike. Specifications: 27-inch display with 320Hz refresh rate 1ms response time for reduced motion blur Vibrant panel with clear and immersive visuals Adaptive sync for smooth performance without tearing Multiple connectivity options and ergonomic adjustments
Are you looking for a high-performance monitor to boost your productivity? The MSI Pro MP251P 25″ 100Hz Monitor is the perfect choice. This monitor offers stunning visuals and smooth performance for both work and entertainment. Firstly, let’s talk about the display quality. The MSI Pro MP251P features a 25-inch screen with a 100Hz refresh rate. This ensures crisp, clear images and reduces motion blur. Whether you’re working on detailed design projects or enjoying your favorite movies, the visual experience is exceptional. Moreover, the 100Hz refresh rate provides a smooth and fluid viewing experience. This is especially beneficial for gaming and video playback. You won’t miss any details with this monitor’s high refresh rate. In addition, the MSI Pro MP251P is designed with productivity in mind. Its wide screen provides ample space for multitasking. You can easily open multiple windows and work on various tasks simultaneously. This helps in improving your efficiency and workflow. Furthermore, this monitor is equipped with anti-flicker technology and a blue light filter. These features reduce eye strain, allowing you to work for longer periods without discomfort. It’s a great choice for those who spend long hours in front of the screen. Connectivity options are also plentiful with the MSI Pro MP251P . It includes multiple ports such as HDMI and DisplayPort, making it easy to connect to different devices. This versatility enhances your overall user experience. In conclusion, the MSI Pro MP251P 25″ 100Hz Monitor is an excellent investment for anyone seeking to improve their productivity and enjoy stunning visuals. Whether for work or entertainment, this monitor delivers on all fronts. Elevate your workspace with the MSI MP251P today! Specifications: Display : 24.5″ IPS Resolution : 1920 x 1080 (FHD) Refresh Rate : 100Hz Response Rate : 1ms MRPT
View Sonic Monitor VA2432-h 24” 1080p IPS Monitor HDMI and VGA Input SuperClear® IPS Technology for rich colors at wide angles 75Hz Refresh rate delivers fluid visuals Eye-Care technology for comfortable viewing Eco-mode for low energy consumption Superior ViewMode color rendering options VESA wall-mountable Specifications: View Sonic Monitor VA2432-h 24” 1080p IPS Monitor HDMI and VGA Input SuperClear® IPS Technology for rich colors at wide angles 75Hz Refresh rate delivers fluid visuals Eye-Care technology for comfortable viewing 1 Year Warranty
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
BATTERY DELL F3YGT 7.6V 60Wh Type F3YGT Battery for Dell Latitude 7480 7490 7280 7290 7380 7390 P73G001 P73G002 P28S001 P28S002 P29S002 DM3WC 2X39G DM6WC 451-BBYE 453-BBCF P28S P73G KG7VF 4-Cell About this item REPLACE BATTERY PART : 7.6V 60 WHr 4-Cell F3YGT battery replace part F3YGT DM3WC 2X39G 0DM3WC 0F3YGT 451-BBYE 453-BBCF KG7VF. (Only replace with type 60Wh battery, NOT fit DJ1J0 42WHr 3-Cell! Please check your original battery to make sure you get the correct replacement battery!) FIT LAPTOP MODELS: For Dell Latitude 12 7000 7280 7290 Latitude 13 7000 7380 7390 Latitude 14 7000 7480 7490 Latitude 7280 7290 7380 7390 7480 7490 E7280 E7290 E7380 E7390 E7480 E7490 P28S P73G P28S001 P28S002 P73G001 P73G002 Series laptop. (NOT fit for Dell Latitude 7390 2-in-1 Series) SPECIFICATION: Model Name: 60Wh Standard Rechargeable Li-ion Battery Type F3YGT; Battery Type: Li-Ion Polymer; Voltage: 7.6V; Capacity: 60Wh; Cells: 4-cell; Size: About 9.37×3.78×0.22inch; Weight: About 10OZ / 0.63lb; Condition: 100% New; Life span: About 300-500 discharge per charge cycles; Packages includes: 1PC F3YGT laptop battery(with two free screwdrivers and user manual for easy installation, battery cable NOT included)
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
WiWU Waterproof Lycra Cosmo Laptop Slim Bag Laptop Handbag with Strap for Men and Women
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
