The Asus ZenScreen 15.6″ Portable USB Monitor is the perfect solution for productivity on the go. Its slim and lightweight design makes it easy to carry anywhere. Whether you’re working, studying, or gaming, this portable monitor enhances your experience. With a Full HD 1080p display, the Asus ZenScreen delivers crisp and vibrant visuals. The IPS panel ensures wide viewing angles and accurate colors. Enjoy clear images whether you’re indoors or outdoors. Setting up the Asus ZenScreen 15.6″ Portable USB Monitor is simple. It connects via USB-C or USB-A, making it compatible with laptops, tablets, and smartphones. No need for extra drivers or complicated installations. This monitor features an auto-rotating screen, allowing you to switch between portrait and landscape modes. It’s ideal for coding, reading documents, or multitasking efficiently. With TÜV Rheinland-certified Eye Care technology, the Asus ZenScreen reduces blue light and flicker. This helps minimize eye strain, making it perfect for long hours of use. Work or watch comfortably without discomfort. The Asus ZenScreen Portable USB Monitor comes with a foldable smart case that doubles as a stand. Adjust it to different angles for the best viewing experience. The built-in pen hole also lets you prop up the monitor with a pen. Designed for both professionals and casual users, this monitor is a must-have for portable productivity. Stay efficient and expand your screen space wherever you go. Upgrade your workflow today with the Asus ZenScreen 15.6″ Portable USB Monitor. Specifications: Display : 15.6″ IPS Resolution : FHD (1920×1080) Refresh Rate : 60Hz Response Rate : 5ms GTG Interface : USB-C
The Lenovo ThinkVision T24-4v 23.8″ FHD IPS Monitor 64B6MAT1EU is a professional-grade display designed for productivity, video conferencing, and office workflows. It delivers a Full HD resolution with an IPS panel for wide viewing angles and consistent image quality. Additionally, its ergonomic stand supports height, tilt, swivel, and pivot adjustments for comfortable long-term use. This monitor features a 1920 × 1080 resolution with a 23.8-inch screen size. Moreover, it supports up to 120Hz refresh rate and a fast response time for smooth visual performance in everyday tasks. It also provides 99% sRGB color coverage for accurate and consistent colors. The ThinkVision T24-4v includes a full connectivity set with HDMI 1.4, DisplayPort 1.2, VGA, and a USB hub. Therefore, it supports modern and legacy devices in office environments. It also integrates USB-C and USB-A ports for flexible peripheral connections depending on configuration. It is equipped with built-in conferencing features including an integrated webcam, microphone, and speakers in supported configurations. Additionally, it supports low blue light technology and TÜV-certified eye comfort features for reduced eye strain during long work sessions. The Lenovo ThinkVision T24-4v 23.8″ FHD IPS Monitor 64B6MAT1EU is designed for professional users who need reliability, ergonomic flexibility, and consistent visual performance in daily productivity environments. Specifications: 23.8-inch Full HD (1920 × 1080) IPS display Up to 120Hz refresh rate for smooth visuals 99% sRGB color gamut for accurate color reproduction HDMI, DisplayPort, VGA, and USB hub connectivity Fully ergonomic stand with height, tilt, swivel, and pivot adjustment
HP S3PRO 324pv Monitor Overview The HP S3PRO 324pv is a Full HD monitor designed for professional and office use. It delivers clear visuals and stable performance. As a result, it suits business environments and home offices. 23.8-Inch Full HD Display This monitor features a 23.8-inch Full HD resolution. Therefore, text appears sharp and easy to read. Moreover, images look clear and well balanced. Because of this, it supports long working sessions comfortably. In addition, wide viewing angles keep content visible from different positions. As a result, collaboration becomes easier. Smooth and Reliable Visual Performance The HP S3PRO 324pv provides smooth visuals for daily tasks. As a result, scrolling and multitasking feel natural. Furthermore, the display maintains consistent brightness. This improves overall viewing comfort. Eye Comfort and Anti-Glare Screen This monitor includes eye comfort features. Therefore, it helps reduce eye strain during extended use. In addition, the anti-glare coating minimizes reflections. As a result, the screen stays clear in bright environments. Connectivity and Easy Setup The HP S3PRO 324pv includes essential connectivity options. As a result, it connects easily to desktops and laptops. Moreover, setup is quick and simple. Therefore, users can start working immediately. Professional Design and Mounting Support The monitor features a clean and professional design. In addition, it supports VESA mounting. As a result, users can create a flexible workspace layout. Ideal for Business and Office Use This monitor focuses on clarity and reliability. Moreover, it supports productivity without distractions. In conclusion, the HP S3PRO 324pv is a practical Full HD monitor for professional use. Specifications: Display: 23.8-inch diagonal VA panel with 3-sided micro-edge bezels. Performance: 100Hz refresh rate for smooth visuals, 3000:1 contrast ratio, 250 nits brightness, 16:9 aspect ratio. Connectivity: 1x HDMI 1.4, 1x VGA.
Are you in search of a gaming monitor that takes your gaming experience to the next level? Look no further than the Samsung 32″ 165Hz Gaming Monitor. This monitor is packed with features that deliver smooth gameplay and stunning visuals, making it the perfect choice for gamers. Transitioning to its core, the Samsung Gaming Monitor boasts a high refresh rate of 165Hz, ensuring fluid motion and reduced screen tearing for an ultra-smooth gaming experience. Whether you’re playing fast-paced action games or immersing yourself in the latest AAA titles, this monitor keeps up with the action without missing a beat. Its 32-inch display provides ample screen real estate for immersive gaming sessions. With vibrant colors and crisp details, every game comes to life on this monitor, pulling you into the heart of the action. Furthermore, the Samsung 32″ 165Hz Gaming Monitor features a sleek and modern design that complements any gaming setup. With slim bezels and a minimalist aesthetic, this monitor not only enhances your gaming experience but also adds a touch of style to your gaming rig. Connectivity is key, and this monitor offers a range of ports including HDMI and DisplayPort, allowing you to connect to your gaming PC, console, and other devices with ease. Whether you’re gaming solo or with friends, stay connected and ready to play at a moment’s notice. In summary, the Samsung 32″ 165Hz Gaming Monitor is the ultimate choice for gamers seeking high performance and immersive visuals. Upgrade your gaming setup today and experience gaming like never before with this top-of-the-line monitor. Specifications: Display : 32″ IPS Resolution : 2,560 x 1,440 Refresh Rate : 165Hz Response Rate : 1ms (GTG)
The MSI MAG 255PXF 24.5″ 300Hz Gaming Monitor is built for competitive gamers. It delivers ultra-fast refresh rates and smooth visuals for an edge in every game. Firstly with a 24.5-inch Full HD IPS panel, this gaming monitor offers vibrant colors and sharp details. The 300Hz refresh rate ensures ultra-smooth gameplay, reducing motion blur and screen tearing. Every movement is displayed with precision, making it perfect for fast-paced games. Furthermore the MSI MAG 255PXF features a 1ms response time, minimizing ghosting and input lag. This ensures every action is instantly reflected on the screen. Whether you’re playing FPS, racing, or eSports games. Moreover with Adaptive Sync technology, the display eliminates screen tearing and stuttering. This provides a seamless visual experience, even during intense gaming sessions. Also the monitor comes with wide viewing angles, ensuring consistent colors from every perspective. Its high color accuracy makes it suitable for content creation and video editing. The MSI MAG 255PXF 24.5″ 300Hz Gaming Monitor is designed for comfort and flexibility. It has an adjustable stand that allows tilt, swivel, and height adjustments. This ensures the best ergonomic setup for long gaming sessions. With multiple connectivity options, including DisplayPort and HDMI, this monitor is compatible with PCs, consoles, and gaming laptops. Plug and play with ease and enjoy lag-free visuals. Finally the monitor also features anti-flicker and low blue light technology, reducing eye strain. This allows you to game for longer without discomfort. In conclusion, the MSI MAG 255PXF 24.5″ 300Hz Gaming Monitor is the perfect choice for serious gamers. With ultra-fast performance, vibrant visuals, and ergonomic design, it provides a competitive edge in every game. Specifications: Display : 24.5″ Rapid IPS Resolution : 1920×1080 FHD Refresh Rate : 300Hz Response Rate : 0.5ms Speaker : 2W x2
SanDisk 1TB Portable SSD - Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware - External Solid State Drive - SDSSDE30-1T00-326 SanDisk 1TB Portable SSD – Up to 800MB/s, USB-C, USB 3.2 Gen 2, Updated Firmware – External Solid State Drive – SDSSDE30-1T00-326 About this item Solid state performance with up to 800MB/s read speeds in a portable drive. (Based on internal testing; performance may be lower depending on host device, interface, usage conditions, and other factors. 1 MB = 1,000,000 bytes.) Back up your content and memories on a storage solution that fits seamlessly into your mobile lifestyle. Take it with you on your adventures—up to a two-meter drop, protection means this durable drive can take a beating. (Based on internal testing.) Secure it to your belt loop or backpack for extra peace of mind thanks to the tough rubber hook. From SanDisk, a brand professional photographers trust to take on assignments.
A premium ultralight pre-owned Lenovo ThinkPad T14s Gen 3 with 14" display, AMD Ryzen 7 6850U, 16GB RAM, and 512GB SSD—delivering exceptional performance, all-day battery life, and workstation-class integrated graphics in a featherlight business laptop.
ZOWIE XL2411K ZOWIE XL2411K With the introduction of the PS5 and Xbox Series X. console gamers are finally able to take advantage of a 120Hz refresh rate . This is a significant upgrade for competitive FPS players, as the increased smoothness and clarity . can result in quicker reaction times and easier tracking of enemies. DyAc™ Technology – A Different Spray Feeling DyAc™ makes vigorous in-game actions such as spraying less blurry. This allows gamers to see the position of crosshair and impact points more clearly which can help with recoil control. Different In-Game Color Modes – Play To Your Liking We are releasing tailored game modes to meet different preferences and scenarios. Each color setting takes careful consideration, game by game, scene by scene. to make sure the colors work throughout the gameplay, and not compromised across different maps. Make Visual Adjustments Based on Your In-Game Needs Black eQualizer to increase visibility in dark scenes without the bright areas. Color Vibrance to adjust color setting and tone to differentiate enemy targets in-game. and Game modes to switch between presets for different game titles. these are all adjustments that allow players to play with their preferred visual settings. XL Setting to Share Share your own settings with a teammate, friend, or your fans. Save video profiles quickly and share conveniently through a simple user interface. Fluid & Flexible Adjustment – More Comfort In-Game We understand that each player has his/her own unique combination of monitor height and angle adjustment. With height adjustment & free tilt, players are able to setup quickly and conveniently resulting in a more comfortable playing environment. Smaller Base – More Playing Space New base is designed to take up less space while maintaining the same stability. This allows gamers more space in their setup for in-game movements and allows. them the flexibility to make adjustments and play comfortably. Specifications: Specifications LCD size (inch) 24″ Aspect ratio 16:9 Max. resolution (PC/Laptop) 1920 x 1080 at 144Hz (HDMI 2.0, DP) Max. resolution (Console) 1920 x 1080 at 120Hz for PS5 / Xbox series X (HDMI2.0) Refresh rate 144Hz Display area (mm) 531.36 x 298.89 Pixel pitch (mm) 0.276 1 year warranty Manufacturer Link
The Alienware AW2724HF 27″ 360Hz Gaming Monitor is built for serious gamers who want speed and clarity. It features a 27-inch Full HD Fast IPS display with sharp visuals and wide viewing angles. With a 360Hz refresh rate via DisplayPort and up to 255Hz through HDMI, the monitor delivers smooth motion in fast-paced games. A 0.5ms response time reduces blur, making every action look sharp and clear. The monitor supports AMD FreeSync Premium and VESA Adaptive-Sync, helping eliminate screen tearing for smoother gameplay. It also covers 99% of the sRGB color range and supports HDR10, offering rich and vibrant visuals. It comes with plenty of ports, including two DisplayPort 1.4, one HDMI 1.4, four USB 3.2 Gen 1 ports, and one USB upstream. This gives you flexible options to connect accessories and gaming gear. The stand is fully adjustable with options to tilt, swivel, pivot, and adjust height for better comfort. It also supports VESA mounting, allowing you to set it up the way you want. The design features thin bezels, making it great for multi-monitor setups. It also includes game-enhancing tools like crosshair overlays and display modes to give players an edge. Overall, the Alienware AW2724HF combines high refresh rates, fast response, and rich visuals in a sleek and adjustable design, perfect for competitive and casual gamers alike. Specifications: Display : 27″ Fast IPS Resolution : 1920×1080 FHD Refresh Rate : 360Hz Response Time : 0.5ms
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
Apple MacBook Pro 16" A2141 2019 Logic Board i7 2.6GHz 16GB 512GB 4GB VGA Apple MacBook Pro 16″ A2141 2019 Logic Board i7 2.6GHz 16GB 512GB 4GB VGA Intel 2.6 GHz Six Core i7-9th gen 16 GB RAM 512 GB SSD AMD RADEON PRO 5300M 4GB Intel UHD Graphics 630 Intel 2.6 GHz Six Core i7-9th gen 16 GB RAM 512 GB SSD AMD RADEON PRO 5300M 4GB Intel UHD Graphics 630
The BenQ GL2780 27″ 75Hz Monitor is a practical and affordable choice for everyday use and light gaming. It features a 27-inch Full HD screen that delivers sharp visuals and clear details for work or play. The monitor offers a 75Hz refresh rate and a fast 1ms response time for smooth motion and reduced blur. Its LED backlight provides good brightness, while the anti-glare screen helps reduce reflections in bright rooms. With BenQ Eye-Care technology, including Flicker-Free and Low Blue Light modes, your eyes stay comfortable longer. The Brightness Intelligence feature adjusts the screen brightness based on room lighting for better viewing. You can connect the monitor easily using HDMI, DisplayPort, VGA, or DVI-D inputs, giving flexibility with devices. It also includes built-in 2W speakers and a headphone jack for simple audio without needing extras. The stand allows tilt adjustment, so you can set the best viewing angle for your desk setup. It’s also VESA mount compatible, giving you the option to mount it on a wall or arm. The design is sleek and clean, fitting nicely in any home office, school, or entertainment space. With solid performance and user-friendly features, it’s a great option for students, professionals, and casual gamers. The BenQ GL2780 27″ 75Hz Monitor offers reliable performance, smooth visuals, and great eye comfort at a budget-friendly price. Specifications: Display : 27″ Resolution : FHD 1920 x 1080 Refresh Rate : 75Hz Response Time : 1ms Speaker : Integrated
The ViewSonic XG2409 24″ 180Hz Gaming Monitor is built for smooth and responsive gaming performance. With a fast 180Hz refresh rate, it delivers fluid visuals and reduced motion blur, ideal for action-packed games. Its 1ms MPRT response time ensures clear images with minimal ghosting or lag. The SuperClear® IPS panel offers rich colors and wide viewing angles, making every scene vivid and immersive. The ViewSonic XG2409 24″ 180Hz Gaming Monitor features AMD FreeSync™ support, which helps prevent screen tearing and stuttering during gameplay. HDR10 support boosts contrast and detail, offering more lifelike visuals. The Full HD resolution (1920 x 1080) produces sharp and detailed images for gaming, movies, and work. With 250 nits brightness and a 1,000:1 contrast ratio, it maintains clarity even in brighter environments. Connectivity is simple with two HDMI 1.4 ports and one DisplayPort 1.2, giving you flexibility with multiple devices. It also includes a 3.5mm audio output for easy audio integration. Designed with comfort in mind, the monitor stand is adjustable for height, tilt, swivel, and pivot, helping you find the perfect viewing angle. It also supports VESA mounting for custom setups. The anti-glare coating helps reduce screen reflections, making it easier to focus on your game. Its clean, minimal design blends well with any gaming or home office setup. In conclusion, the ViewSonic XG2409 24″ 180Hz Gaming Monitor offers smooth visuals, fast response, and ergonomic features, making it a great choice for gamers who want performance and value. Specifications: Display : 24″ IPS Resolution : 1920 x 1080 FHD Refresh Rate : 180Hz Response Rate : 1ms MPRT
OEM-quality left and right loudspeaker replacement pair for MacBook Pro 14″ (Model A2442, 2021, M1 Pro/Max)—restores Apple’s high-fidelity six-speaker audio system with precise sound staging, rich bass, and clear highs. Compatible With: MacBook Pro 14-inch (2021, Model A2442) with Apple M1 Pro or M1 Max chip (Model Identifier: MacBookPro18,3 or MacBookPro18,4). Includes: Complete left and right speaker assemblies, each containing: Dual-driver units (force-cancelling woofers + tweeters) Pre-attached flex cables with OEM connectors Mounting brackets and acoustic seals Dual-driver units (force-cancelling woofers + tweeters) Pre-attached flex cables with OEM connectors Mounting brackets and acoustic seals Audio Performance: Matches Apple’s advanced six-speaker sound system with: Wide stereo separation High dynamic range Spatial audio and Dolby Atmos support (when paired with original logic board and firmware) Wide stereo separation High dynamic range Spatial audio and Dolby Atmos support (when paired with original logic board and firmware) OEM Build Quality: Precision-engineered housings with exact acoustic chambers, grille alignment, and cable routing—ensures zero rattling and full macOS audio calibration compatibility. Common Use Cases: Replaces speakers damaged by liquid ingress, physical impact, or internal failure (e.g., no sound, distorted audio, or imbalance between channels). Installation Note: Requires full bottom case and logic board disassembly. Speakers are secured with screws and acoustic adhesive. Highly recommended for certified Apple technicians or experienced professionals only due to complex internal layout and sensitivity of audio components. Important: This speaker pair is exclusive to A2442 (14″, 2021, M1 Pro/Max). Not compatible with 16″ MacBook Pro (A2485), 13″ models, or Intel-based MacBooks. This speaker pair is exclusive to A2442 (14″, 2021, M1 Pro/Max). Not compatible with 16″ MacBook Pro (A2485), 13″ models, or Intel-based MacBooks. Model Verification: Confirm your device via > About This Mac > Model Identifier (must be MacBookPro18,3 or MacBookPro18,4).
A1953 A1990 Battery Replacement for MacBook Pro 15″ Mid 2018 2019 EMC 3215 EMC 3359 Touch Bar MV902LL/A MV912LL/A MV922LL/A MV932LL/A MV942LL/A MV952LL/A MV962LL/A MV972LL/A MV902B/A MR962LL/A 【Specification】Voltage: 11.4V. Capacity: 83.6Wh 7336mAh. Battery Type: Li-ion. Condition:100% New from Manufacturer. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 【Compatible Part Number】A1953 A1990 (EMC 3215) A1990 (EMC 3359) 020-02391 820-01095 080-333-400 2217-2548 MacBookPro15,1 MacBookPro15,3. 【Compatible Laptop Models】Battery replacement for MacBook Pro (15-inch, Model A1990, Mid 2018, Mid 2019) : MR962LL/A, MR972LL/A, MR932LL/A, MR942LL/A, MV922LL/A, MV932LL/A, MV902LL/A, MV912LL/A, MV942LL/A, MV952LL/A, MV962LL/A, MV972LL/A, MR952LL/A, MV902xx/A, MV912, MV922, MV932, MV942, MV952, MR932, MR942, MR952, MR962, MR972, MUQH2. 【ANTIEE Promise】Everyone of our replacement batteries has tested with strict quality control standards to ensure the true capacity, stable current and low self-discharge. All ANTIEE batteries are UL / CE / FCC / RoHS Certified for safety, we are confident in the performance of the replacement battery.
Boost your daily productivity with the Lenovo ThinkPad E14 Gen 2, featuring a powerful 11th Gen Intel Core i5 processor. With flexible configurations of up to 16GB RAM and a fast 512GB NVMe SSD, this 14-inch business laptop offers the perfect blend of performance, security, and legendary ThinkPad durability
Samsung ViewFinity S5 S50GC 34″ UltraWide Monitor features a 21:9 Ultra WQHD display for wide and detailed viewing. Additionally, the large screen helps improve productivity and entertainment by showing more content at once. The flat design and minimal bezel support multi‑task workflows with less distraction. Moreover, the monitor supports HDR10 for richer color and deeper contrast. This brings more accurate and vibrant visuals for movies, work, and games. In addition, the 100Hz refresh rate helps deliver smoother motion during fast scenes and transitions. Furthermore, AMD FreeSync keeps the display and graphics card refresh rates in sync to reduce tearing and stutter. Eye Saver Mode and Flicker Free technology help reduce eye strain during long use. Picture‑in‑Picture (PIP) and Picture‑by‑Picture (PBP) let users view content from two sources at once. Finally, the panel offers wide viewing angles and consistent visuals across the screen. The monitor also includes an ambient light sensor to adjust brightness automatically in changing lighting conditions. These features make it a versatile choice for work and multimedia. Specifications: The monitor has Ultra WQHD (3440 × 1440) resolution with a 21:9 aspect ratio for a wide view. It offers a 100Hz refresh rate for smooth motion and reduced blur. HDR10 support adds richer colors and improved contrast. AMD FreeSync keeps graphics and display refresh rates aligned to reduce tearing. Features include PIP/PBP for multitasking, Eye Saver Mode, and Flicker Free eye comfort tech.
The MSI G27C3F 27″ is a curved gaming monitor designed to give you smooth and immersive gameplay. It features a 27-inch curved screen that pulls you into the action. With a 165Hz refresh rate, the MSI G27C3F delivers fast and fluid visuals. Moreover, the 1ms response time ensures every movement looks sharp without any motion blur. This makes the MSI G27C3F perfect for fast-paced games. In addition, it uses VA panel technology for deeper blacks and vivid colors. Thanks to its Full HD resolution, games and videos appear clear and detailed. Plus, the MSI G27C3F includes anti-flicker and blue light reduction features. These help reduce eye strain during long gaming or work sessions. Setting up the MSI G27C3F 27″ is quick and simple with its user-friendly design. It also supports tilt adjustment for better viewing comfort. Furthermore, the monitor’s sleek and modern look fits perfectly into any gaming setup. For competitive gamers, the MSI G27C3F offers a real edge with its smooth performance and sharp visuals. Also, it supports AMD FreeSync technology to prevent screen tearing. This keeps your gameplay clean and uninterrupted. Besides gaming, the MSI G27C3F is great for movies, streaming, and everyday use. You can also connect it easily to your PC, laptop, or console. Its ports offer flexible options for all your needs. In short, the MSI G27C3F 27″ is a smart pick for anyone who wants a fast, stylish, and reliable gaming monitor. Choose the MSI G27C3F for better speed, clarity, and comfort in every session. Specifications: Display : 27″ Resolution : 1920 x 1080 FHD Refresh Rate : 180Hz Response Time : 1ms GTG
MacBook Pro 13″ Retina A1989 / A2159 (2018-2019) Display Assembly (Silver) MacBook Pro 13″ Touch Bar 2019z A1989 (EMC 3214 MacBookPro15,2) 2.3 GHz A1989 (EMC 3214 MacBookPro15,2) 2.7 GHz MacBook Pro 13″ Touch Bar 2019 A1989 (EMC 3358 MacBookPro15,2) 2.4 GHz A1989 (EMC 3358 MacBookPro15,2) 2.8 Ghz MacBook Pro 13″ Two Thunderbolt Ports 2019 A2159 (EMC 3301 MacBookPro15,4) 1.4 GHz A2159 (EMC 3301 MacBookPro15,4) 1.7 GHz
