The LG UltraWide 34″ 60Hz Curved Monitor offers an expansive 21:9 aspect ratio, providing ample screen space for multitasking and immersive viewing. Its 3440 x 1440 resolution delivers sharp and detailed visuals, enhancing both productivity and entertainment experiences. Featuring a curved IPS display, this monitor ensures consistent color accuracy and wide viewing angles, making it ideal for creative professionals and gamers alike. The 60Hz refresh rate provides smooth motion, suitable for everyday tasks and casual gaming. Equipped with HDR10 support, the monitor enhances contrast and color range, bringing visuals to life with greater depth and realism. The sRGB 99% color gamut ensures vibrant and accurate colors, essential for photo and video editing. Connectivity options include USB Type-C, HDMI, and DisplayPort, allowing seamless integration with various devices. The USB Type-C port supports data transfer and power delivery, simplifying your workspace setup. The ergonomic stand offers height and tilt adjustments, enabling you to customize the monitor’s position for optimal comfort. Its sleek, virtually borderless design adds a modern touch to any workspace. In summary, the LG UltraWide 34″ 60Hz Curved Monitor combines high-resolution visuals, color accuracy, and ergonomic design, making it a versatile choice for professionals and enthusiasts. Specifications: Display : 34″ IPS Resolution : 3440 x 1440 QHD Refresh Rate : 60Hz Response Rate : 5ms GTG Curvature : 3800R
The TeamGroup CX2 1TB SSD is a reliable 2.5-inch SATA III solid-state drive designed to upgrade laptops and desktops with faster boot times, smoother performance, and quiet operation. Using 3D NAND flash, it delivers consistent speed and improved durability compared to traditional hard drives. ⚡ SATA III Performance: Delivers fast everyday speeds for system boot, app loading, and file transfers compared to HDDs. 💾 1TB Capacity: Ample storage for OS, software, games, and large media files. 🧠 3D NAND Flash: Improves stability, efficiency, and lifespan versus older NAND types. 🔇 Silent & Shock-Resistant: No moving parts, making it quiet and more durable for laptops and mobile use. 🌡️ Low Power Consumption: Helps extend laptop battery life and reduces heat. 🛠️ Easy Upgrade: Standard 2.5″ 7mm design fits most SATA laptops and desktops.
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.
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
Samsung Odyssey 49″ OLED G9 Curved Gaming Monitor features a wide Dual QHD (5120 × 1440) resolution on a large ultrawide screen. Additionally, the OLED panel delivers vibrant colors with deep contrast and fast pixel response. This makes scenes look sharp and lifelike for games and media. The monitor’s curved design wraps around the view for greater immersion. Moreover, this model supports a high refresh rate and quick response time for fluid motion. Therefore, action and gameplay appear smooth with minimal blur. It also includes adaptive sync support that works with graphics cards to reduce screen tearing. Samsung equips this monitor with multiple connection options for modern devices. Furthermore, the panel offers wide viewing angles to maintain consistent color even at sharp angles. Eye comfort features help reduce eye strain during long sessions. The ergonomic stand lets users adjust the screen for a comfortable setup. As a result, this monitor suits both gaming and everyday tasks. Specifications: 49″ Dual QHD (5120 × 1440) OLED curved display for expansive and detailed visuals High refresh rate and ultra‑fast 0.03 ms pixel response for smooth gameplay Adaptive sync support reduces screen tearing with compatible graphics cards Wide viewing angles with vibrant color and deep contrast Multiple connectivity options for modern gaming and devices
The HUAWEI IdeaHub B2-65 is a 65-inch intelligent collaboration display designed for meetings, classrooms, and hybrid workspaces. It combines a 4K UHD interactive touchscreen with built-in conferencing tools to support smooth communication. Additionally, it enables writing, video meetings, and wireless sharing in one integrated device. Moreover, it features a 4K resolution screen with zero-gap bonding. Therefore, it delivers clear visuals and smooth touch interaction for presentations and collaboration. Furthermore, Huawei equips it with a 4K camera, 6-microphone array, and 30W speakers. So, it provides clear video, strong voice pickup, and balanced sound for meetings up to about 10 meters. In addition, it supports dual Wi-Fi connectivity and wireless projection. Therefore, users can share content easily from laptops, tablets, and phones without cables. It also includes an intelligent whiteboard for real-time writing and collaboration. Also, it supports both Android and optional Windows OPS system integration. So, it fits different office and enterprise IT setups. Overall, the Huawei IdeaHub B2-65 delivers a complete all-in-one collaboration solution with strong audio-visual performance, smart connectivity, and interactive meeting tools. Specifications: 65-inch 4K UHD interactive touchscreen 4K camera with intelligent conferencing support 6-microphone array with 10m pickup range Wireless projection and dual Wi-Fi support Integrated whiteboard for collaboration
Mouschi Field Computer Mouse Pad, Non-Slip Rubber Base and Textured Stitched Edge Mousepads, Mouse Pad Pack for Office and Home Mouschi Field Computer Mouse Pad, Non-Slip Rubber Base and Textured Stitched Edge Mousepads, Mouse Pad Pack for Office and Home Brand: Mouschi Size: Small – 290 X 240 X 3mm Medium – 360 X 300 X 3mm Large – 450 X 400 X 4 mm X-Large – 900 X 420 X 4 mm Color: Black Recommended uses for product: Gaming Material: fabric Mouschi Field Mouse Pad Micro-Weave Fabric: Creates a dense surface for a faster and smoother glide for your mouse. Durable Stitched Anti-Fray Edges: 360° of stitching guards against surface peeling. Staying Power: An anti-skid textured rubber base keeps the mouse pad securely in place even during the most intense gaming sessions. Brand: Mouschi Size: Small – 290 X 240 X 3mm Medium – 360 X 300 X 3mm Large – 450 X 400 X 4 mm X-Large – 900 X 420 X 4 mm Color: Black Recommended uses for product: Gaming Material: fabric
The AOPEN 32HC5QR 31.5″ FHD 165Hz Curved Gaming Monitor wraps your view with a wide curved screen. It gives immersive visuals for gaming, work, or movies. The Full HD resolution produces clear, sharp images. The 31.5‑inch size provides plenty of screen space for multitasking or play. Moreover, the AOPEN 32HC5QR offers a high 165 Hz refresh rate that delivers very smooth motion. Fast action scenes appear fluid and crisp. The VA panel gives deep contrast and rich blacks for vibrant visuals. This enhancement adds depth to games and movies. In addition, the monitor uses adaptive sync (AMD FreeSync Premium) to match frame rate and screen refresh. This avoids screen tearing and stutter during gameplay. You get stable and consistent frame delivery even in intense gaming. Also, the curved 1500R / 1800R screen design helps immerse you deeper into action. It reduces eye‑strain by keeping all parts of the display at a comfortable viewing distance. The AOPEN 32HC5QR includes useful eye‑care features. It has Flicker‑Free and BlueLightShield technologies to reduce screen flicker and filter blue light. This helps protect your eyes during extended use. It also supports HDMI and DisplayPort connectivity for easy setup with laptops, PCs, or consoles. The monitor includes a slim bezel design for a clean modern look. It has a tilt‑adjustable stand and works with VESA mounts for flexible placement. The build feels solid and reliable for everyday use. Overall, the AOPEN 32HC5QR 31.5″ FHD 165Hz Curved Gaming Monitor combines immersive curved display, smooth refresh rate, strong contrast, and eye‑friendly design. It improves gaming, work, and entertainment experiences. It is ideal for gamers, content viewers, and everyday users who want a large, smooth, and comfortable display. Specifications: Display : 31.5 VA Resolution : FHD 1920×1080 Refresh Rate : 165Hz Response Time : 1ms Curvature : 1800R
Genuine Apple sleep/wake sensor flex cable (Hall effect sensor) for MacBook Air 13.6″ (Model A2681, 2022, M2)—ensures automatic display sleep when the lid is closed and wake-on-open functionality. OEM part number 821-04129-02. Compatible With: MacBook Air 13.6-inch (2022, Model A2681) with Apple M2 chip (all colors: Silver, Space Gray, Starlight, Midnight). Apple Part Number: 821-04129-02 (exact OEM service part). Function: Contains the Hall effect sensor that detects the magnet in the MacBook Air’s display lid. This allows macOS to: Sleep the system when the lid is closed Wake instantly when opened Prevent false sleep/wake events during use Sleep the system when the lid is closed Wake instantly when opened Prevent false sleep/wake events during use Location: Mounted near the right side of the keyboard, adjacent to the battery and logic board. Common Failure Symptoms: MacBook doesn’t sleep when lid is closed MacBook wakes randomly in a bag “Lid closed” not recognized in macOS Requires manual sleep or power button use MacBook doesn’t sleep when lid is closed MacBook wakes randomly in a bag “Lid closed” not recognized in macOS Requires manual sleep or power button use Part Type: Flex cable with integrated Hall sensor—not just a cable, but a calibrated magnetic sensor module. Installation Note: Requires full bottom case removal and careful disconnection of the battery. The sensor is adhered near the I/O area—do not bend or puncture. Recommended for experienced technicians.
Panel Size (inch) : 23.8 Aspect Ratio : 16:9 Display Viewing Area (H x V) : 527.04 x 296.46 mm Display Surface : Non-Glare Backlight Type : LED Panel Type : IPS Viewing Angle (CR≧10, H/V) : 178°/ 178° Pixel Pitch : 0.2745mm Resolution : 1920×1080 Color Space (sRGB) : 99% Brightness (Typ.) : 250cd/㎡ Contrast Ratio (Typ.) : 1000:1 ASUS Smart Contrast Ratio (ASCR) : 100000000:1 Display Colors : 16.7M Response Time : 5ms(GTG) Refresh Rate (Max) : 75Hz Flicker-free : Yes Video Feature Trace Free Technology : Yes SPLENDID Technology : Yes Color Temp. Selection : Yes(4 modes) GamePlus : Yes QuickFit : Yes HDCP : Yes VRR Technology : FreeSync™ Low Blue Light : Yes I/O Ports HDMI(v1.4) x 1 DVI x 1 VGA x 1 Signal Frequency Digital Signal Frequency : 24~84 KHz (H) / 48~75 Hz (V) Analog Signal Frequency : 24~84 KHz (H) / 48~60 Hz (V) Power Consumption Power Consumption : 13.2W Power Saving Mode : <0.5W Power Off Mode : <0.5W Voltage : 100-240V, 50/60Hz Mechanical Design Tilt : Yes (+23° ~ -5°) VESA Wall Mounting : 100x100mm Kensington Lock : Yes Dimensions (Esti.) Phys. Dimension with Stand (W x H x D) : 540.45 x 403.67 x 203.94 mm Phys. Dimension without Stand (W x H x D) : 540.45 x 324.67 x 44.4 mm Box Dimension (W x H x D) : 559 x 415 x 127 mm Weight (Esti.) Net Weight with Stand : 3.57 Kg Net Weight without Stand : 3.18 Kg Gross Weight : 5.50 Kg 3 Years Warranty manufacturer link
AOC 24B30HM2 23.8-inch 100Hz monitor delivers smooth everyday performance for work, study, and casual gaming. It focuses on stable motion, clear Full HD visuals, and comfortable long-term use. Additionally, it features a 23.8-inch VA panel with Full HD resolution (1920 × 1080). This panel provides strong contrast and sharp image quality, so it improves readability and viewing comfort. Moreover, it supports a 100Hz refresh rate. As a result, it offers smoother motion than standard 60Hz displays, especially during scrolling and light gaming. The monitor includes a 4ms response time. Therefore, it helps reduce motion blur and keeps fast-moving visuals clearer during use. In addition, it uses Adaptive Sync technology. This reduces screen tearing and stuttering, so visuals stay stable across different frame rates. Furthermore, it includes eye comfort features like Flicker-Free technology and Low Blue Light mode. So it helps reduce eye strain during long sessions. AOC 24B30HM2 23.8-inch 100Hz monitor delivers reliable performance, smooth visuals, and essential comfort features for daily use. Specifications: 23.8-inch VA panel with Full HD 1920 × 1080 resolution 100Hz refresh rate for smoother visuals 4ms response time for reduced motion blur Adaptive Sync for tear-free performance Flicker-Free and Low Blue Light eye comfort features
The Lenovo ThinkPad T470s features an Intel Core i5 7th Gen processor, 8GB RAM, and a fast 256GB SSD for smooth everyday performance. With a durable business-grade build and non-touch 14″ display, it’s ideal for professionals, students, and productivity tasks.
A reliable pre-owned Dell Latitude 5480 with 14" display, 7th Gen Core i5, 8GB RAM, and 256GB SSD—offering solid business performance, security, and durability for everyday professional use.
Genuine-spec keyboard replacement for MacBook Pro 13″ (Model A2251, 2020) — choose US QWERTY or UK QWERTY (with £ symbol). Features Apple’s reliable Magic Keyboard with scissor-switch mechanism, backlighting, and precise OEM fit. Compatible With: MacBook Pro 13-inch (2020, Two Thunderbolt Ports, Model A2251, Model Identifier MacBookPro16,1) with Intel Core i5/i7 processors. Layout Options (select at purchase): US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full function row. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation. US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full function row. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation. Keyboard Type: Apple’s Magic Keyboard with scissor-switch mechanism—offering improved durability, quieter typing, and 1mm key travel compared to Butterfly keyboards. Integrated Features: Full backlit keys for low-light environments Ambient light sensor support OEM-style flex cable pre-attached for direct connection to the logic board Full backlit keys for low-light environments Ambient light sensor support OEM-style flex cable pre-attached for direct connection to the logic board Precision Build: Engineered to match Apple’s exact dimensions, key spacing, and top-case curvature—ensures seamless visual and functional integration. Installation Note: The keyboard is factory-glued into the top case. Replacement requires full disassembly, careful adhesive removal, and professional re-adhesion. Recommended for experienced or certified repair technicians only.
The MSI MAG 274CXF 27″ FHD 280Hz Curved Gaming Monitor delivers ultra-smooth motion for competitive gamers and fast action. Its Full HD resolution shows clear images, sharp details, and clean visuals. The 27-inch curved screen gives you immersive viewing and a wide field of vision. This helps you see more game space and stay focused. Moreover, the MSI MAG 274CXF features a blazing 280 Hz refresh rate for lightning-fast visuals. Fast scenes and quick moves look fluid and responsive with minimal blur. The high refresh rate helps you react faster in shooters and action games. In addition, the monitor uses a high-performance panel with strong contrast and rich colors. Blacks are deep and dark scenes feel immersive. The curved 1500R design reduces eye strain and makes long gaming sessions easier. Furthermore, the MSI MAG 274CXF supports Adaptive-Sync technology to match refresh rate and GPU output. This avoids screen tearing and stutter. You get smooth and stable gameplay on PC or console. Also, the monitor offers useful connectivity options like DisplayPort and HDMI. You can connect gaming PCs, laptops, or consoles easily. The slim bezel design gives your setup a clean modern look. It fits well on gaming desks of all sizes. The monitor also includes eye-care features like Flicker-Free and reduced blue light settings. This helps reduce strain during long hours of use. It is ideal for gamers who spend many hours playing. Overall, the MSI MAG 274CXF 27″ FHD 280Hz Curved Gaming Monitor combines speed, smoothness, and immersive design. It boosts your gaming performance, keeps visuals sharp, and ensures comfort during long sessions. It is perfect for competitive gamers and anyone who wants top-tier fluid visuals. Specifications: Display : 27″ Rapid VA Resolution : FHD 1920×1080 Refresh Rate : 280Hz Response Time : 0.5ms Curvature : 1500R
Genuine-spec US layout keyboard replacement for MacBook Pro 13″ (Model A1466, Late 2015–Early 2016)—featuring traditional scissor-switch mechanism, backlighting, and full OEM compatibility for reliable, comfortable typing. Compatible With: MacBook Pro 13-inch non-Touch Bar models: Late 2015 (Intel Core i5/i7, Retina, A1466, Model Identifier MacBookPro12,1) Early 2016 (Intel Core i5/i7, Retina, A1466, MacBookPro13,1) Late 2015 (Intel Core i5/i7, Retina, A1466, Model Identifier MacBookPro12,1) Early 2016 (Intel Core i5/i7, Retina, A1466, MacBookPro13,1) 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—not Butterfly or Magic Keyboard—known for durability, deeper key travel, and tactile feedback. Integrated Features: Backlit keys for low-light use, ambient light sensor support, and OEM-style ribbon cable for direct logic board connection. Build & Fit: Precision-engineered to match Apple’s original dimensions and mounting points—ensures flush alignment within the top case and consistent key height. Installation Note: Keyboard is secured with screws and minimal adhesive (unlike later glued models), making replacement more accessible. Still requires full top case disassembly and battery disconnect. Suitable for intermediate to advanced technicians.
The Gigabyte 25″ 200Hz GS25F2 Gaming Monitor is built for gamers who want smooth and fast gameplay. It features a 25-inch display with Full HD resolution for clear and detailed visuals. This monitor gives you sharp images with excellent color quality. With its ultra-fast 200Hz refresh rate, the Gigabyte 25″ 200Hz GS25F2 Gaming Monitor reduces motion blur and screen tearing. Gamers will enjoy smooth and responsive action in every game they play. It also features a 1ms response time, which helps reduce lag and ghosting during fast movements. As a result, every action appears more accurate and real-time. The Gigabyte 25″ 200Hz GS25F2 Gaming Monitor supports AMD FreeSync for tear-free visuals. This ensures that the screen refresh rate matches the graphics card’s performance. Moreover, the monitor has built-in gaming features like crosshairs and timers to improve your gaming experience. These tools give players an edge during competitive gameplay. The sleek and modern design of this gaming monitor fits perfectly in any gaming setup. It includes a thin bezel for a more immersive viewing experience. Additionally, it has multiple input ports like HDMI and DisplayPort for easy connection to your devices. You can connect it to your PC, console, or laptop quickly. The Gigabyte 25″ 200Hz GS25F2 Gaming Monitor is also designed for long use. It includes low blue light and flicker-free technology to reduce eye strain. In conclusion, this gaming monitor is ideal for gamers who want speed, clarity, and comfort. It’s a great upgrade for serious and casual gamers alike. Specifications: Display : 24.5″ SS IPS Resolution : 1920 x 1080(FHD) Refresh Rate : 200 Hz Response Rate : 1ms (GTG) Speaker : 2x 2W
The HUAWEI IdeaHub Board 2 IHB2-65SU is a 65-inch intelligent collaboration display designed for meetings, classrooms, and hybrid work environments. It combines a 4K UHD interactive touchscreen with built-in collaboration tools for writing, presenting, and video communication. Additionally, it supports smooth interaction for real-time teamwork. Moreover, it features a 65-inch 4K (3840 × 2160) infrared multi-touch screen with up to 20 touch points. Therefore, users can write and interact accurately during meetings and lessons. Furthermore, Huawei designs it with ultra-low writing latency of around 16–25 ms. So, writing feels natural and responsive like a real whiteboard. It also includes anti-glare and zero-gap bonding for clearer visuals. In addition, it integrates a 4K display system with built-in speakers and microphone support. Therefore, it improves audio-visual communication for hybrid meetings and presentations. It also supports dual Wi-Fi and wireless projection from multiple devices. Also, it runs on Android-based system support with optional Windows OPS integration. So, it fits different enterprise IT environments and meeting setups. Overall, the Huawei IdeaHub Board 2 IHB2-65SU delivers interactive 4K collaboration, smooth writing performance, and flexible connectivity for modern workplaces and education spaces. Specifications: 65-inch 4K UHD infrared touch display Up to 20-point multi-touch support Ultra-low writing latency (~16–25 ms) Built-in speakers and conferencing support Wireless projection with dual Wi-Fi connectivity
Get premium ThinkPad reliability at an incredible value with this pre-owned E14 Gen 3. Powered by the efficient AMD Ryzen 5 5500U 6-core processor, 16GB RAM, and a 512GB SSD, it delivers the perfect balance of performance and portability for students and professionals alike.
The MSI PRO MP251W E2 25″ FHD 120Hz Monitor delivers crisp, clear visuals for work, entertainment, and casual gaming. It uses a Full HD panel that shows sharp detail in movies, documents, and web browsing. The 25-inch size gives enough screen space without overwhelming your desk. This makes it a practical choice for home and office setups. Moreover, the MSI PRO MP251W E2 features a 120 Hz refresh rate. This smoother refresh makes motion cleaner and reduces blur during video playback and light gaming. Fast animations and scrolling look fluid. This improves comfort during long sessions. In addition, the monitor uses an IPS panel with wide 178° viewing angles. Colors remain stable even if you move side to side. The panel supports 99% sRGB coverage for natural and balanced color reproduction. This makes it useful not only for daily tasks, but also for creative work and media editing. Furthermore, the MSI PRO MP251W E2 includes adaptive sync technology to help prevent screen tearing when frame rates fluctuate. It also features anti-glare coating and built-in speakers, making it convenient for multimedia and everyday use. Also, the design is clean and modern. The thin bezels give a neat, minimal look that fits many setups. The stand allows tilt adjustment for ergonomic comfort. The monitor supports VESA mounting if you want wall mount or alternate stand setup. Overall, the MSI PRO MP251W E2 25″ FHD 120Hz Monitor balances simplicity, performance, and versatility. It delivers smooth visuals, color quality, and ease of use in a compact form factor. This monitor is a great pick for everyday computing, office tasks, media, and light gaming. Specifications: Display : 25″ IPS Resolution : FHD 1920×1080 Refresh Rate : 120Hz Response Time : 1ms
