Dell Latitude 5400 — business-class laptop built for reliability and productivity.• Intel Core i5 8th Gen • 8 GB RAM • 256 GB SSD • 14” FHD TouchscreenWindows | Durable Design | Backlit Keyboard
The MSI MAG 275QF 27″ 180Hz Gaming Monitor delivers an immersive experience for competitive and casual gamers. With its high refresh rate, it ensures smooth gameplay. This 27-inch gaming monitor features a Fast IPS panel with a 2560 x 1440 (QHD) resolution. The display offers sharp visuals and vibrant colors, enhancing gaming performance. The wide color gamut ensures lifelike images, making every scene more realistic. With a 180Hz refresh rate and 1ms response time, motion blur is minimized. This allows fast-paced action to remain clear and fluid. It gives gamers an advantage in competitive matches, reducing input lag. The MSI MAG 275QF 27″ 180Hz Gaming Monitor supports Adaptive Sync technology. This feature eliminates screen tearing and stuttering for a smooth experience. Whether playing FPS, racing, or RPG games, visuals stay sharp and fluid. It comes with multiple connectivity options, including DisplayPort and HDMI. This ensures compatibility with gaming PCs, consoles, and other devices. The ergonomic stand allows height, tilt, and swivel adjustments for better comfort. With Eye Care technology, the monitor reduces blue light and flicker. This helps minimize eye strain during long gaming sessions. Gamers can enjoy extended playtime without discomfort. The sleek and modern design of the MSI MAG 275QF 27″ 180Hz Gaming Monitor makes it a great addition to any setup. The ultra-thin bezels provide a more immersive viewing experience, perfect for multi-monitor setups. For gamers looking for speed, clarity, and smooth performance, this monitor is an excellent choice. It enhances both gameplay and overall visual experience. Specifications: Display : 27″ Rapid IPS Resolution : 2560×1440 (WQHD) Refresh Rate : 180Hz Response Rate : 0.5ms
BenQ MOBIUZ EX251 25” FHD 220Hz Gaming Monitor is a high-refresh-rate gaming display designed for smooth gameplay, fast response, and clear Full HD visuals. It targets competitive gamers who need speed and low input delay. The monitor uses a 25-inch IPS panel with a 1920 × 1080 resolution. Therefore, it delivers sharp images and wide viewing angles for gaming and everyday use. In addition, it supports a 220Hz refresh rate and 1ms GTG response time for very smooth motion. Moreover, it includes AMD FreeSync support. As a result, it reduces screen tearing and stuttering during fast gameplay. In addition, it improves visual stability in FPS and action games. The EX251 also uses BenQ MOBIUZ color tuning features. Therefore, it enhances game visuals with adjusted contrast and color profiles for better detail visibility. In addition, it includes eye-care technologies that reduce flicker and blue light for longer gaming comfort. Furthermore, it supports console and PC gaming at 1080p up to high refresh rates depending on connection type. As a result, it works well with modern gaming setups including PlayStation, Xbox, and gaming PCs. Finally, the BenQ MOBIUZ EX251 delivers fast performance, smooth motion, and comfortable long-session gaming in a compact 25-inch form factor. Specifications: Display: 25-inch IPS panel with 1920 × 1080 Full HD resolution Refresh Rate: Up to 220Hz for ultra-smooth gameplay Response Time: 1ms GTG for fast reaction performance Sync: AMD FreeSync support for tear-free gaming Features: Eye-care technology with low blue light and flicker-free design
The ViewSonic VX24G10 24″ FHD 240Hz Gaming Monitor delivers ultra-smooth visuals ideal for gaming and daily use. It displays Full HD resolution with bright colors and crisp detail. The screen uses an IPS panel for wide viewing angles and accurate color. This makes movies, work, and games look clear and vivid. Moreover, the VX24G10 offers a blazing 240 Hz refresh rate. It reduces motion blur and makes fast movements appear fluid. This is especially helpful in competitive games or fast action scenes. The 1 ms response time ensures quick pixel transitions for sharp results. It helps avoid ghosting and lag during gameplay. In addition, the monitor includes modern connectivity options: multiple HDMI ports and DisplayPort. These ports let you connect PCs, laptops, and consoles easily. This flexibility supports many devices without trouble. The monitor also supports adaptive sync (FreeSync / G-Sync), which reduces screen tearing and ensures smooth frame rates. Furthermore, the ViewSonic VX24G10 features eye-friendly technology. Its flicker-free panel and blue-light filter help reduce eye strain during long sessions. The slim bezel design gives a modern look and saves desk space. The stand allows slight tilt adjustment for comfortable viewing angles. Also, the monitor supports HDR10, enhancing contrast and improving dynamic range for richer images. This adds depth to games, movies, and creative work. The combination of IPS quality, fast refresh, and HDR makes the VX24G10 a versatile choice for both gaming and productivity. Overall, the ViewSonic VX24G10 24″ FHD 240Hz Gaming Monitor offers smooth motion, sharp visuals, strong compatibility, and eye care. It is perfect for gamers, creators, and anyone who values performance and comfort. It enhances every task — from gaming to work to watching media. Specifications: Display : 24″ IPS Resolution : 1920×1080 Refresh Rate : 240Hz Response Time : 1ms
The Samsung 22″ 75Hz Essential Monitor is designed to enhance your daily computing tasks with smooth performance and vibrant colors. Whether you’re working, watching videos, or browsing, this monitor delivers clear and crisp visuals. Featuring a 22-inch screen, this monitor provides ample display space for multitasking. With a 75Hz refresh rate, the Samsung 22″ Essential Monitor ensures fluid motion, reducing screen tearing and providing a smooth viewing experience. The Full HD resolution brings sharp details and vivid colors, making your videos and images look more lifelike. Whether for work or entertainment, you’ll enjoy a more immersive visual experience with the Samsung 22″ Essential Monitor. With its slim and sleek design, this monitor complements any workspace. It’s easy to set up, and the compact design saves valuable desk space. The monitor’s slim bezels also give it a modern, streamlined look. The Samsung Essential Monitor comes equipped with Eye Saver Mode and Flicker-Free technology, designed to reduce eye strain during long hours of use. This makes it ideal for both work and extended screen time. In addition, the monitor offers easy connectivity options, including HDMI and VGA ports, allowing you to connect a wide range of devices effortlessly. In conclusion, the Samsung 22″ 75Hz Essential Monitor is the perfect blend of performance, style, and convenience. Upgrade your viewing experience with smooth visuals and vivid colors for everyday use. Specifications: Display : 22″ VA Resolution : FHD (1920×1080) Refresh Rate : 75Hz Response Time : 5ms GTG
The ViewSonic 27″ 180Hz Gaming Monitor delivers an ultra-smooth gaming experience. With a 180Hz refresh rate, every motion looks fluid and lag-free. This makes it perfect for fast-paced games like shooters and racing titles. Featuring a 1ms response time, the monitor reduces motion blur and ghosting. You get sharper visuals and smoother gameplay, giving you a competitive edge. Say goodbye to input lag and enjoy instant reactions. The ViewSonic 27-inch Gaming Monitor offers Full HD resolution for crisp and detailed visuals. Whether you’re gaming, streaming, or working, you’ll enjoy clear images with vibrant colors. The IPS panel ensures wide viewing angles and accurate colors. With AMD FreeSync technology, screen tearing and stuttering are eliminated. The monitor syncs with your graphics card for seamless gameplay. This ensures a smoother and more immersive gaming experience, even in demanding scenes. This monitor is designed for comfort and versatility. The ergonomic stand allows you to adjust height, tilt, and swivel for the perfect viewing angle. You can also mount it on a wall for a clean setup. Multiple connectivity options make the ViewSonic 27″ 180Hz Gaming Monitor easy to use. It includes HDMI and DisplayPort, allowing you to connect to gaming consoles, PCs, and more. With a sleek, modern design, this monitor enhances any gaming setup. The narrow bezels create a seamless multi-monitor experience. Enjoy distraction-free gaming with an immersive display. Upgrade your gaming experience with the ViewSonic 27″ 180Hz Gaming Monitor. Enjoy smooth performance, fast response times, and stunning visuals. Specifications: Display : 27″ IPS Resolution : 1920 x 1080 FHD Refresh Rate : 180Hz Response Rate : 1ms MPRT
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
Genuine-spec US layout (QWERTY) black keyboard replacement for MacBook Air 13.6″ and 15″ models (2023–2025, M2/M3/M4 chips)—featuring Apple’s Magic Keyboard with scissor-switch mechanism, backlighting, and precise OEM fit. Compatible With: 13.6″ MacBook Air: A2681 (M2, 2022–2023), A3113 (M3, 2023–2024), A3240 (M4, 2024–2025) 15″ MacBook Air: A2941 (M2, 2023), A3114 (M3, 2023–2024), A3241 (M4, 2024–2025) 13.6″ MacBook Air: A2681 (M2, 2022–2023), A3113 (M3, 2023–2024), A3240 (M4, 2024–2025) 15″ MacBook Air: A2941 (M2, 2023), A3114 (M3, 2023–2024), A3241 (M4, 2024–2025) Keyboard Layout: Standard US English (QWERTY) with wide Enter key, dedicated left/right arrow keys in inverted-T layout, and full function row—matches Apple’s original US configuration. Design: Apple’s Magic Keyboard with scissor-switch mechanism—providing quiet, stable, and responsive typing with 1mm key travel and enhanced durability. Features: Integrated backlighting for low-light use, ambient light sensor compatibility, and OEM-style flex cable for direct logic board connection. Color: Sleek black keycaps—ideal for Space Gray and Midnight finishes, and visually consistent across all color variants. Precision Fit: Engineered to exact Apple specifications for alignment, key spacing, and mounting—ensures seamless integration into the original top case. Installation Note: The keyboard is factory-glued into the top case. Replacement requires full disassembly, careful removal, and professional-grade re-adhesion. Recommended for experienced technicians only.
Experience premium mobility and intuitive control with the pre-owned ThinkPad T490s. Featuring a powerful Intel Core i5 8th Gen processor, 16GB RAM, and a 256GB NVMe SSD, this ultra-slim professional laptop stands out with its responsive FHD Touchscreen for a more interactive and efficient workflow.
Step into the world of unparalleled gaming visuals with the AOC 24G4 24″ 180Hz Gaming Monitor. This cutting-edge display is designed to elevate your gaming experience to new heights. Boasting a 180Hz refresh rate, the AOC 24G4 ensures ultra-smooth gameplay, minimizing motion blur and providing a competitive edge. Immerse yourself in fluid graphics for a truly captivating gaming session. Equipped with a 24-inch screen, this gaming monitor strikes the perfect balance between size and clarity. Enjoy crisp details and vibrant colors, enhancing every pixel of your favorite games. Featuring AMD FreeSync technology, the AOC 24G4 synchronizes your monitor’s refresh rate with your graphics card, reducing screen tearing and stuttering. Say goodbye to disruptions and hello to seamless gaming performance. The sleek design of the monitor adds a touch of sophistication to your gaming setup. Its thin bezels create an expansive view, making you feel completely immersed in the action on-screen. Connectivity is a breeze with multiple ports, including HDMI and DisplayPort. Easily hook up your gaming console, PC, or other devices for a hassle-free gaming setup. In summary, the AOC 24G4 24″ 180Hz Gaming Monitor is a game-changer for avid gamers. With its high refresh rate, vivid display, and advanced features, it delivers an immersive gaming experience like no other. Upgrade your setup and take your gaming to the next level today! Specifications: Display : 23.8″ Fast IPS Resolution : 1920 × 1080 (FHD) Refresh Rate : 180Hz Response Time : 1ms
The LG UltraGear 27GP750-B 27″ 240Hz FHD Gaming Monitor delivers ultra-smooth performance and vivid visuals for serious gamers. Its 27-inch Full HD screen provides sharp and clear images, making games, movies, and content creation more engaging. Moreover, the high 240Hz refresh rate ensures fluid motion and responsive gameplay, giving you a competitive advantage in fast-paced games. This monitor features a low response time that minimizes motion blur and ghosting, ensuring every action is precise and clear. Additionally, it offers accurate colors and wide viewing angles, enhancing the visual experience for gaming and entertainment. Its sleek design complements any gaming setup or office environment while providing a professional and modern aesthetic. The LG UltraGear 27GP750-B includes multiple connectivity options, making it easy to connect PCs, consoles, and other devices. Furthermore, ergonomic tilt and height adjustments provide comfort during long gaming sessions. Therefore, it is ideal for competitive gamers, streamers, and content creators. Finally, it combines responsive performance, crisp visuals, and user-friendly design for a superior gaming experience. Specifications: 27″ Full HD gaming monitor 240Hz refresh rate for ultra-smooth gameplay Low response time for reduced blur Accurate colors and wide viewing angles Multiple connectivity options
GSAN GS-3021 POS All in One Touch 15.6" - Intel i5 - 8GB - 128GB SSD with Customer Display Main Board: POS motherboard CPU: I5-3RD GEN Memory: DDR3 8GB Hard Disk: 128GB Power: External power supply Input: 110V-240V 50/63Hz 2A Output: 12V DC 8A 96W MAX Interface: 6 USB port 1 LAN port
The Samsung 32″ 60Hz Smart Monitor M70D offers a premium viewing experience with its 4K UHD resolution. Whether you’re working, watching movies, or gaming, this monitor delivers crystal-clear visuals and vibrant colors. With built-in smart features, the Samsung M70D acts as both a monitor and a smart TV. Stream your favorite shows and movies directly from apps like Netflix, YouTube, and more, without needing a separate device. The 32″ screen size provides plenty of space for multitasking, making it perfect for professionals who need to work on multiple applications at once. Its 60Hz refresh rate ensures smooth visuals, even during fast-moving scenes. Designed for modern connectivity, the Samsung M70D includes USB-C, HDMI, and wireless connectivity options. Easily connect your devices for seamless data transfer, charging, and display in one cable. Its slim and sleek design makes the Samsung 32″ Smart Monitor M70D a stylish addition to any desk or living space. The adjustable stand allows you to tilt the monitor for a more comfortable viewing experience. The Samsung M70D also comes with a built-in remote and voice control capabilities, allowing you to navigate through apps and settings effortlessly. This makes it easy to switch between work and entertainment modes. In conclusion, the Samsung 32″ 60Hz Smart Monitor M70D is the perfect all-in-one solution for your work and entertainment needs. Enjoy 4K clarity, smart features, and versatile connectivity in one sleek device. Specifications: Display : 32″ VA Resolution : 4K (3,840 x 2,160) Refresh Rate : 60Hz Response Time : 4ms GTG
The MSI MAG 27CQ6PF 27″ 2K 180Hz Curved Gaming Monitor delivers smooth visuals and immersive gaming experiences. It is designed for competitive and casual gamers. This monitor combines high performance with stunning image quality. It features a 27-inch curved display for immersive viewing. The 1500R curvature brings you closer to the action. This provides a more natural and engaging experience. The MSI MAG 27CQ6PF offers 2K resolution for sharp details. You can enjoy crisp images in games and media. This improves clarity compared to standard Full HD monitors. With a 180Hz refresh rate, it ensures ultra-smooth gameplay. Fast action scenes feel fluid and responsive. This gives gamers a competitive edge in every match. The monitor also features a fast response time. It reduces motion blur and ghosting in fast-paced games. This provides clear visuals for intense gaming sessions. Adaptive sync technology ensures tear-free and stutter-free performance. It keeps gameplay smooth even during demanding scenes. This enhances your overall gaming experience. The MSI MAG 27CQ6PF includes multiple connectivity options. You can connect gaming consoles, PCs, and other devices. This makes it versatile for entertainment and work. Its sleek design with thin bezels adds style. It fits perfectly in gaming setups or workstations. The adjustable stand improves comfort during long sessions. In summary, the MSI MAG 27CQ6PF 27″ 2K 180Hz Curved Gaming Monitor combines speed, clarity, and immersion. It is perfect for gamers who demand performance. Specifications: Display : 27″ Rapid VA Screen : 2560 x 1440 (WQHD) Refresh Rate : 180Hz Response Rate : 0.5ms Curvature : 1500R
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
• LCD panel type: IPS technology • Backlight type: W-LED system • Panel Size: 23.8 inch / 60.5 cm • Display Screen Coating: Anti-Glare, 3H, Haze 25% • Effective viewing area: 527 (H) x 296.5 (V) • Aspect ratio: 16:9 • Maximum resolution: 1920 x 1080 @ 75 Hz* • Pixel Density: 93 PPI • Response time (typical): 4 ms (GtG)* • Brightness: 250 cd/m² • Contrast ratio (typical): 3000:1 • SmartContrast: Mega Infinity DCR • Pixel pitch: 0.2745 x 0.2745 mm • Viewing angle: 178º (H) / 178º (V), @ C/R > 10 • Flicker-free • Display colors: 16.7 M • Scanning Frequency: 30 – 85 kHz (H) / 48 – 75 Hz (V) • LowBlue Mode • EasyRead • sRGB • Adaptive sync , CABLE POWER,CABLE HDMI,CABLE VGA 1 YEAR WARRANTY
Experience the future of gaming with the Samsung Odyssey G9 49″ 240Hz Curved Gaming Monitor. This ultra-wide display wraps around your vision for complete immersion. With a 49-inch screen, it feels like two monitors in one. The 1000R curvature matches the natural curve of the human eye. So, your games feel more real and more engaging. Thanks to the 240Hz refresh rate, every frame loads lightning fast. No more motion blur, just smooth and fluid gameplay. Moreover, the 1ms response time helps you stay ahead of the competition. React instantly to every move, shot, or surprise attack. The Samsung Odyssey G9 49″ 240Hz Curved Gaming Monitor also supports NVIDIA G-Sync and AMD FreeSync Premium Pro. Therefore, screen tearing and stuttering are things of the past. Colors look rich and vibrant with QLED technology. Every detail pops, even in the darkest shadows and brightest highlights. In addition, the futuristic design with customizable RGB lighting looks amazing in any gaming setup. It also features multiple ports, making connectivity easy and fast. Whether you’re gaming, streaming, or multitasking, it handles it all with ease. Split-screen tools let you view and work on several apps at once. As a result, productivity and entertainment meet in one screen. If you want the best gaming experience, this is the monitor for you. Choose the Samsung Odyssey G9 49″ 240Hz Curved Gaming Monitor and level up your game today. Specifications: Display : 49″ VA Curvature : 1000R Resolution : DQHD (5,120 x 1,440) Refresh Rate : 240Hz Response Rate : 1ms GTG
The Lenovo Legion R25f-30 is a 24.5-inch FHD gaming monitor designed for competitive gameplay and fast response performance. It uses a VA panel with high refresh rate support and sharp Full HD resolution. Additionally, it targets gamers who need smooth motion clarity and low input delay. This monitor delivers a 1920 × 1080 resolution with a 240Hz refresh rate, which can be overclocked up to 280Hz in supported setups. Moreover, it features a 0.5ms MPRT response time for reduced motion blur during fast-paced gaming. The Lenovo Legion R25f-30 supports AMD FreeSync Premium to reduce screen tearing and stuttering. Additionally, it includes HDMI 2.1 and DisplayPort 1.4 for high refresh rate connectivity across PCs and consoles. It also provides 99% sRGB color coverage and 3000:1 contrast ratio for richer image depth. Therefore, it balances gaming performance with decent color accuracy for everyday use. The Lenovo Legion R25f-30 is built for esports-focused users who prioritize speed, responsiveness, and smooth visuals in competitive games. Specifications: 24.5-inch Full HD (1920 × 1080) VA gaming display 240Hz refresh rate with up to 280Hz overclock support 0.5ms MPRT response time for fast motion clarity AMD FreeSync Premium for tear-free gaming performance HDMI 2.1 and DisplayPort 1.4 connectivity support
Battery Replacement for A1819 MacBook Pro 13" A1706 Late 2016 Mid 2017 MLH12LL MLH12LL/A MLH12LL/A MPXV2LL MPXV2LL/A MPXV2LL/A Battery Replacement for A1819 MacBook Pro 13″ A1706 Late 2016 Mid 2017 MLH12LL MLH12LL/A MLH12LL/A MPXV2LL MPXV2LL/A MPXV2LL/A 【Technical Details:】 Model Number: A1819; Battery type: Li-ion; Voltage: 11.1V; Capacity: 4300mAh 49.02Wh，Condition: brand new 【Compatible with:】 Mid 2017 MacBook Pro 13-inch Series: MacBook Pro 13 inch Touch A1706(Mid 2017); MacBook Pro 13 inch A1706(EMC 3163) (Mid 2017); MacBook Pro 13-inch MPXV2LL/A or MPXW2LL/A or MPXX2LL/A or MPXY2LL/A 【Compatible with:】MacBook Pro 13 inch Touch A1706(Late 2016); MacBook Pro 13 inch A1706(EMC 3071) (Late 2016); MacBook Pro 13-inch MLH12LL/A or MLVP2LL/A or MNQF2LL/A or MNQG2LL/A 【Compatible with:】2016 2017 MacBook Pro 13″ Four Thunderbolt 3 Ports A1706 model: MacBook Pro 13″ Touch i5 2.9GHz A1706(Late 2016); MacBook Pro 13″ Touch i5 3.1GHz A1706(Late 2016); MacBook Pro 13″ Touch i5 3.1GHz A1706(Mid 2017); MacBook Pro 13″ Touch i5 3.3GHz A1706(Mid 2017); MacBook Pro 13″ Touch i7 3.3GHz A1706(Late 2016); MacBook Pro 13″ Touch i7 3.5GHz A1706(Mid 2017)
Experience fluid motion and edge-to-edge clarity with this ultra-smooth 100Hz Full HD display. Featuring a frameless IPS panel and a modern minimalist design, it’s the perfect upgrade for smooth office workflows and casual gaming. Model: Buerotika B24M1 Primary Specs: 23.8-inch (24″ class) Display/Performance: IPS (In-Plane Switching) for superior color accuracy Visual/Build Quality: 1920 x 1080 (Full HD) Resolution Aesthetic: Frameless “Zero-Bezel” design for immersive viewing and seamless multi-monitor setups Build: Ultra-slim profile with a sturdy, modern base Adjustability: Tilt-adjustable stand for ergonomic positioning Input/Output: HDMI and VGA ports for universal compatibility with PCs and laptops Compatibility: Plug-and-play support for Windows and macOS Smooth Motion: 100Hz Refresh Rate (provides significantly smoother scrolling and video compared to standard 60Hz) Eye Care: Low Blue Light technology and Flicker-Free backlight to reduce eye fatigue during long sessions Response Time: 14ms (typical) – optimized for stable, everyday professional use Home & Office: Enhancing productivity with smooth window transitions. Content Consumption: Watching movies and streaming with vibrant IPS colors. Multi-Monitor Arrays: The frameless edges make it ideal for side-by-side configurations. Casual Gaming: A budget-friendly entry into high-refresh-rate smoothness.
