The Samsung ViewFinity S7 27″ 4K Monitor is an outstanding choice for anyone seeking a clear, high-resolution display. This 4K monitor offers crisp visuals and vibrant colors, enhancing your viewing experience for work, gaming, and entertainment. With a 27-inch display, this monitor provides a large screen space to increase productivity. The 4K UHD resolution (3840 x 2160) offers four times the clarity of Full HD, so every detail is sharp and vivid. Whether you’re editing photos, creating designs, or just enjoying high-definition content, this monitor brings every image to life. The Samsung ViewFinity S7 4K Monitor is designed with a slim, minimalist look. It features ultra-thin bezels, allowing for a near borderless viewing experience. This makes it ideal for dual-monitor setups, as you can position screens side by side seamlessly. Setting up the monitor is simple, with multiple connectivity options like HDMI and DisplayPort. It also features USB-C compatibility, allowing for fast data transfer and device charging, reducing the need for multiple cables on your desk. This Samsung 4K monitor supports HDR10, providing higher contrast and accurate colors for a richer picture. Its wide viewing angles ensure that the image stays consistent, even when viewed from the side. This is perfect for shared workspaces or group settings. Additionally, the Samsung ViewFinity S7 has advanced eye-care technology. It includes features like Eye Saver Mode and Flicker-Free technology to reduce eye strain during long sessions. Upgrade your workspace or gaming setup with the Samsung ViewFinity S7 Monitor and enjoy stunning visuals. Specifications: Display : 27″ VA Resolution : 4K (3840×2160) HDR10 Refresh Rate : 60Hz Response Rate : 5ms
The MSI Pro MP272 E14C is a 27‑inch FHD monitor built for business and productivity. It delivers clear Full HD visuals with a fast 144 Hz refresh rate. Furthermore, its IPS panel provides wide viewing angles and accurate colors, making work and multimedia more enjoyable. It supports a 1 ms (MPRT) response time, which reduces motion blur in videos and fast‑moving content. In addition, Adaptive‑Sync technology helps smooth gameplay and reduce screen tearing. The monitor also includes HDR Ready support for improved contrast and detail. Moreover, the design features a four‑side slim bezel for a clean look and immersive viewing experience. It offers anti‑glare treatment and built‑in speakers for convenient multimedia use. As a result, the MSI Pro MP272 E14C enhances productivity and comfort whether you work, create, or play. . Specifications: 27‑inch FHD (1920 × 1080) IPS panel with wide viewing angles 144 Hz refresh rate with 1 ms (MPRT) response time Adaptive‑Sync support and HDR Ready for smooth visuals HDMI 2.0 and USB‑C (DP Alt Mode with 15 W PD) connectivity Built‑in speakers, anti‑glare surface, and slim bezel design
The Dell OptiPlex 3040 Micro delivers dependable business performance in a compact, energy-efficient design. Featuring an Intel Core i5 6th Gen processor, 8GB DDR3L RAM, and SSD storage options, it is built for smooth multitasking, fast startups, and reliable operation in professional environments.
Fast-charging feature available on select iPhone and iPad models.
As an E-sports player, your arsenal of devices must be power-packed and rigged up with superior technology. Equipped for competitive gaming, the Lenovo G24-20 takes gaming performance to the next level. A screen size of 23.8-inch, ideal for E-sports, with 3-side NearEdgeless display lets you engage in gaming distraction-free. Your skills and reflexes are backed by the superfast 144 Hz refresh rate, overclock to 165 Hz along with 0.5ms MPRT and AMD FreeSync™ Premium technology – to ensure no target misses due to latency or screen tearing and stuttering. Nothing escapes your eye on the battlefield with In-Plane Switching panel, 99% sRGB colour gamut, and 350 nits brightness that offer minute details and a vivid display performance. What’s more, get more control over your G24-20 monitor with exclusive Lenovo Artery software that lets you tweak display settings to further your game. Delivering an enriching experience, the Lenovo G24-20 gaming monitor significantly reduces lags and slowdowns, enabling ultra-smooth gameplay in every frame. Specifications : Monitor Size 23.8″ Brightness 350 cd/㎡ (typical) Aspect Ratio 16:9 Contrast Ratio 1000:1 Connection Type 2 x HDMI 2.0; 1 x DP 1.2; 1 x Audio Out (3.5 mm) Weight 5.30 Kg Backlight WLED Response Time 0.5 ms (MPRT) / 1 ms (Level 1) / 2 ms (Level 2) / 3 ms (Level 3) / 4 ms (Level 4) / 5 ms (Off mode) Panel Type In-Plane Switching Viewing Angle 178 / 178 degrees Stand Tilt Angle (-5° / 22°), Lift Range (130 mm) EU Energy Rating F Power Requirement 100 – 240 VAC, 47 – 63 Hz Energy Star None Brand Lenovo Packed Weight 7.26 Kg USB Ports None Length 53.9 cm Included Accessory HDMI, DP Built-in Camera No Color Coverage 178° / 178° Color Depth 8-bit Color Support 16.7 Million Eye Caring Yes Gaming Yes Head only Dimentions 52.50 mm x 323.15 mm x 539.75 mm / 2.07″ x 12.72″ x 21.25″ Height-Adjustable Yes Integrated Speaker No Kensington Lock Yes Near Edgeless 3-side Power Consumption 25W Typ, 38W Max, 0.5W Sleep, 0.3W Power Off Software/Driver Yes (Lenovo Artery, Lenovo Display Control Centre) USB Type-C No Weight Head Only 3.30 Kg Weight 7.26 Kg Weight without Package 5.26 Kg Maximum Resolution 1920 x 1080 Brightness 350 cd/m² Height 49.8 cm Depth 23.4 cm EPEAT None 1 Year Warranty manufacturer link
The Lenovo Legion 27Q-10 27″ 2K 240Hz Gaming Monitor delivers crisp visuals with great detail for gaming and work. Its 2K resolution offers sharp images that make games, videos, and work look clear. The 27-inch display gives you enough space to enjoy immersive scenes and multitask comfortably. Moreover, the Lenovo Legion 27Q-10 27″ 2K 240Hz Gaming Monitor features a fast 240Hz refresh rate. This high refresh rate makes motion smooth and fluid. Fast scenes, competitive matches, and rapid movements look clean and responsive. This helps you react quicker and play better. In addition, the monitor uses a panel that shows bright, accurate colors across wide viewing angles. Colors stay consistent whether you view from the center or an angle. This makes games, media, and creative work feel vivid and natural. It improves both gameplay and content display. Furthermore, the Lenovo Legion 27Q-10 27″ 2K 240Hz Gaming Monitor has low input lag for quick response. Controls feel sharp and precise. This enhances gameplay performance, especially in competitive games. It also helps with editing or design tasks that need accuracy. Also, the monitor includes eye-care features to reduce strain during long use sessions. Flicker-free technology reduces flicker, and a blue light filter gives extra comfort. This protects your eyes during long gaming or work periods. This makes the monitor ideal for long sessions. The design of the Lenovo Legion 27Q-10 27″ 2K 240Hz Gaming Monitor is sleek and modern. The thin bezels give it a clean, minimalist look. The stand is strong and stable. It fits well in gaming rooms, workspaces, or creative desks. Overall, the Lenovo Legion 27Q-10 27″ 2K 240Hz Gaming Monitor combines clarity, speed, and comfort for gaming and productivity. It improves performance, visuals, and long-term comfort. This monitor is perfect for gamers, creators, and professionals seeking quality and speed. Specifications: Display : 27″ IPS Resolution : 2560x1440p Refresh Rate : 240Hz Response Time : 0.5ms
The LG 27″ 240Hz UltraGear OLED Gaming Monitor | 27GR95QE-B delivers ultra-fast visuals and rich colors for gaming and media.It features a 2560 × 1440 QHD OLED display for deep blacks and vivid images.Moreover, the smooth 240 Hz refresh rate keeps motion fluid during intense play. This monitor has an extremely fast 0.03 ms (GtG) response time to reduce blur and ghosting.Additionally, its OLED panel supports HDR10 for better contrast and more lifelike scenes.Adaptive sync technologies like FreeSync Premium and G-SYNC help reduce screen tearing and stutter. The LG 27″ 240Hz UltraGear OLED Gaming Monitor | 27GR95QE-B includes HDMI and DisplayPort inputs for easy connections.Furthermore, it has USB ports for peripherals and accessories.Anti-glare and wide 178° viewing angles keep images clear from many positions. This gaming monitor fits well on desks, gaming stations, and work setups.Therefore, it works for competitive gamers and creative content use.Finally, this monitor combines speed, picture quality, and flexibility for daily play and entertainment. Specifications: 27″ (26.5″ viewable) QHD 2560 × 1440 OLED display 240 Hz refresh rate and 0.03 ms (GtG) response time HDR10 with 1.5M:1 contrast and DCI-P3 98.5 % color gamut 2× HDMI + DisplayPort + USB-B upstream + 2× USB-A downstream Anti-glare panel with 178° wide viewing and adaptive sync
Genuine-spec touchpad flex cable for MacBook Pro 16″ (Model A2485, 2021, M1 Pro/Max)—critical for restoring full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repairs. Compatible With: MacBook Pro 16-inch (2021, Model A2485) with Apple M1 Pro or M1 Max chip (Model Identifiers: MacBookPro18,1 / MacBookPro18,2). Part Type: Touchpad flex cable only—does not include the trackpad, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits touch coordinates, Force Touch pressure data, and haptic feedback signals—essential for macOS gestures (e.g., pinch-to-zoom, Force Click, three-finger lookup) and Taptic Engine operation. OEM-Quality Construction: Precisely replicated to Apple’s original specifications—including cable length, connector type, EMI shielding, and flex routing—ensuring signal integrity and long-term reliability. Common Use Cases: Replacing a torn, frayed, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, lost Force Touch, or complete unresponsiveness Replacing a torn, frayed, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, lost Force Touch, or complete unresponsiveness Installation Note: Requires full disassembly of the bottom case and careful routing around the battery and logic board. Connectors use ZIF (Zero Insertion Force) sockets—must be aligned and latched gently. Recommended for certified or professional repair technicians only.
The Samsung S4 S40GD 24 inch IPS FHD monitor delivers clear visuals with a Full HD resolution and wide viewing angles. Additionally, the IPS panel ensures consistent colors across the screen, which makes it suitable for work and entertainment. The 100Hz refresh rate also improves motion clarity during videos and daily tasks. Moreover, the monitor includes Eye Saver Mode and flicker-free technology to reduce eye strain during long sessions. Therefore, it helps maintain comfort while working or studying for extended hours. The slim and ergonomic design also allows flexible adjustments for better positioning and productivity. Furthermore, it offers strong connectivity with HDMI and DisplayPort inputs, allowing easy connection to laptops and desktops. In addition, the monitor supports tilt, swivel, pivot, and height adjustments for improved comfort. Overall, the Samsung S4 S40GD 24 inch IPS FHD monitor is a reliable choice for everyday use. Specifications: 24 inch IPS panel delivers consistent colors and wide viewing angles for clear visuals 100Hz refresh rate provides smoother motion for videos and everyday tasks Eye Saver Mode and flicker free technology help reduce eye strain during long use Ergonomic design supports height, tilt, swivel, and pivot adjustments for comfort Multiple connectivity options including HDMI and DisplayPort for flexible setup Height Adjustable Stand
The Samsung 75″ QLED LS03F The Frame 4K Smart TV QA75LS03FAUXTW uses a 75-inch LCD panel with 3840 × 2160 4K resolution. It is designed for both TV viewing and wall-mounted display use. The panel uses Quantum Dot (QLED layer) technology to improve color reproduction. As a result, it produces more accurate and wider color output compared to standard LCD panels. In addition, it supports 4K upscaling for lower-resolution content. The TV supports HDR formats for compatible content. This increases contrast between bright and dark areas and improves visible detail. Also, motion processing reduces blur during fast-moving scenes such as sports and action content. Samsung equips this model with Tizen OS. Therefore, users access streaming apps, SmartThings integration, and smart features through a unified interface. It also supports Wi-Fi and Bluetooth for wireless device connections. Connectivity includes HDMI ports, USB ports, Ethernet LAN, and optical audio output. It supports external devices such as gaming consoles and sound systems. This model uses The Frame design concept, which allows the TV to function as both a display and a digital art screen when not in use. Specifications: 75-inch 4K UHD LCD panel (3840 × 2160 resolution) Quantum Dot (QLED layer) color enhancement 4K upscaling for lower-resolution content HDR support for compatible content Tizen OS with HDMI, USB, Wi-Fi, Bluetooth, Ethernet connectivity
Battery Model: A1493 A1502 Replacement Laptop Battery for MacBook Pro Retina 13 Inch Late 2013 Mid 2014 ; MacBook Pro A1493 A1582 Battery EMC 2678 2875 2835 ME864 ME865 100% Brand New, Battery Type: Li-Polymer; Capacity: 71.8Wh; Voltage:11.34V; Package include two free screwdriver Compatible:A1502 A1493 (Only for Late 2013, Mid 2014 Version) Apple MacBook Pro 13″ Retina ME864LL/A ME866LL/A ,MacBook Pro “Core i5″ 2.4/2.5 13” Late 2013 Retina Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety.
New RI04 RI06XL Notebook Battery for HP ProBook 450 455 470 G3 Envy 15-Q001TX Laptop Series Fit P/N Spare 805294-001 811063-421 805047-851 P3G15AA HSTNN-DB7B HSTNN-PB6Q About this item Battery Type: Li-ion Capacity: 2600Mah ; Cells: 4-cell; Voltage: 14.8V Compatible: HP ProBook 450 455 470 G3 Envy 15-q000 Notebook PC series Fits: HP R104 R106XL P3G16AA HSTNN-DB7B HSTNN-PB6Q HSTNN-LB6Z HSTNN-Q94C HSTNN-Q95C HSTNN-Q97C RIO4 RIO6XL Spare 805047-851 805294001 805047-851 811063-421 Notebook Laptop Battery 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-Certified for safety
Genuine-spec touchpad flex cable for MacBook Pro 15″ (Model A1707, 2016–2017)—restores full Force Touch functionality, haptic feedback, and precise multi-touch gesture control during trackpad repair or replacement. Compatible With: MacBook Pro 15″ (2016) – Model A1707 (Model Identifier: MacBookPro13,2) MacBook Pro 15″ (2017) – Model A1707 (Model Identifier: MacBookPro14,2) MacBook Pro 15″ (2016) – Model A1707 (Model Identifier: MacBookPro13,2) MacBook Pro 15″ (2017) – Model A1707 (Model Identifier: MacBookPro14,2) Part Type: Touchpad flex cable only — does not include the trackpad housing, Taptic Engine, or mounting hardware. This is the OEM-style ribbon cable that connects the trackpad to the logic board. Function: Transmits: Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. Touch input coordinates Force Touch pressure data Haptic feedback signals to the Taptic Engine Enables full macOS gesture support: Force Click, three-finger lookup, swipe navigation, pinch-to-zoom, and smooth cursor tracking. OEM-Quality Build: Matches Apple’s original specifications in: Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Cable length and routing path Connector pitch and ZIF latch design EMI shielding and flex durability Common Use Cases: Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Replacing a torn, creased, or liquid-damaged original flex cable Completing a trackpad replacement when the original cable is compromised Fixing intermittent trackpad behavior, loss of Force Touch, or complete unresponsiveness Installation Note: Requires full bottom case removal and battery disconnection. Cable routes under internal components near the right speaker and logic board. Connects via a ZIF (Zero Insertion Force) socket—must be aligned carefully and latched gently. Recommended for experienced or certified technicians only. Requires full bottom case removal and battery disconnection. Cable routes under internal components near the right speaker and logic board. Connects via a ZIF (Zero Insertion Force) socket—must be aligned carefully and latched gently. Recommended for experienced or certified technicians only.
Philips 24M2N3200FQ is a 23.8-inch Full HD Fast IPS gaming monitor. It delivers a 1920 × 1080 resolution with a 200Hz refresh rate and 1ms (GtG) response time for very smooth motion handling. Additionally, it uses a Fast IPS panel that keeps colors accurate and viewing angles wide. Moreover, it supports Adaptive Sync to reduce screen tearing during fast gameplay. It also includes HDR10 support for improved contrast in compatible content. Low Input Lag and SmartImage Game modes further enhance responsiveness and visual tuning. Furthermore, it features Flicker-Free technology and LowBlue Mode to reduce eye strain during long sessions. It also provides HDMI 2.0 and DisplayPort 1.4 for modern connectivity. The Philips 24M2N3200FQ monitor delivers competitive 200Hz performance with Fast IPS clarity for gaming and everyday use. Specifications: 23.8-inch Fast IPS panel with Full HD 1920 × 1080 resolution 200Hz refresh rate for ultra-smooth gaming motion 1ms (GtG) response time for reduced blur Adaptive Sync and HDR10 support for smoother visuals HDMI 2.0 and DisplayPort 1.4 connectivity options
A reliable pre-owned Dell Latitude 5400 with 14" display, 8th Gen Core i5, 16GB RAM, and 512GB SSD—ideal for business users and students seeking solid performance, security, and durability in a compact form.
HomBreez 10″ Desk Air Circulator Fan with Remote, 90° +90° Oscillating Table Fan, Quiet Portable Battery Powered Fan for Bedroom, Home, Office, 12 Speeds, 12H Timer About this item Powerful Air Circulation – This air circulation fan provides cool air throughout your entire room, ensuring every corner enjoys refreshing airflow and enhancing your home comfort. Long-lasting Rechargeable Battery – The oscillating fan features a built-in high-capacity battery, lasting up to 12 hours on the minimum wind speed and 3 hours on the maximum wind speed, allowing you to enjoy extended cooling without frequent recharging. Ultra-Quiet Operation – This desk fan utilizes advanced noise reduction technology, operating at less than 20 dB at the minimum wind speed and below 48 dB at the maximum wind speed, ensuring a peaceful environment for rest and work. Full Range Oscillation – Capable of 90° left and right, and 90° up and down oscillation, it evenly distributes cool air throughout the room, covering a wider area. Smart Remote Control – The included remote allows you to effortlessly adjust 12-speed settings and set a timer for up to 12 hours, giving you convenient control without needing to get up.
Digital Device Laptop Keyboard Compatible for MacBook AIR 13″ A1369 A1466 (MID 2011- MID 2017) US Layout 【Unique】Pls see detail compatible models in description below. 【Safe】Easy for you replace your faulty, cracked or broken keyboard ,seller remind that you should replace the keyboard in the off state. All pictures are taken from the real item, please check carefully before bidding, Replacement and high quality, Replace your faulty, cracked or broken keyboard. Each keyboard is tested before shipping Compatibility: MacBook Air 13″ A1369 Mid 2011: MC965LL/A (1.7 GHz Core i5) Mid 2011: MC966LL/A (1.7 GHz Core i5) Mid 2011: MD226LL/A (1.8 GHz Core i7) Compatibility: MacBook Air 13″ A1466 Mid 2012: MD231LL/A (1.8 GHz Core i5) Mid 2012: MD232LL/A (1.8 GHz Core i5) Mid 2012: MD232LL/A (2.0 GHz Core i7) Mid 2013: MD760LL/A (1.3 GHz Core i5) Mid 2013: MD761LL/A (1.3 GHz Core i5) Mid 2013: MD761LL/A (1.7 GHz Core i7) Early 2014: MD760LL/B (1.4 GHz Core i5) Early 2014: MD761LL/B (1.4 GHz Core i5) Early 2014: MD761LL/B (1.7 GHz Core i7) Compatibility: Early 2015: MJVE2LL/A (1.6 GHz Core i5 or 2.2 GHz Core i7) Early 2015: MJVG2LL/A (1.6 GHz Core i5 or 2.2 GHz Core i7) Identifying Numbers APN #: 661-6059, 661-6635, 661-7480
AOC 20E1H 20-inch LED monitor delivers basic and reliable performance for office tasks, study, and everyday computer use. It focuses on simple display quality, energy efficiency, and stable operation. Additionally, it features a 19.5-inch TN panel with HD+ resolution (1600 × 900). This resolution provides clear text and basic image detail, so it suits productivity and general use. Moreover, it supports a 60Hz refresh rate. As a result, it delivers standard smoothness for everyday tasks like browsing, documents, and video playback. The monitor includes a 5ms response time. Therefore, it handles basic motion cleanly with minimal blur for general usage. In addition, it offers HDMI and VGA connectivity. This allows easy connection to both modern and older PCs. Furthermore, it includes Flicker-Free technology and a VESA mount option. So it improves viewing comfort and gives flexible installation options. AOC 20E1H 20-inch LED monitor provides a compact, efficient, and practical display solution for everyday computing needs. Specifications: 19.5-inch TN panel with 1600 × 900 HD+ resolution 60Hz refresh rate for standard smooth performance 5ms response time for basic motion handling HDMI and VGA connectivity for wide compatibility Flicker-Free technology with VESA mount support
The ViewSonic VA2763-H 27″ FHD 100Hz Monitor delivers clear images with strong detail. Its Full HD resolution makes movies, games, and work look sharp. The large 27-inch screen gives you more space to enjoy your content. This helps you stay productive and focused. Moreover, the ViewSonic VA2763-H 27″ FHD 100Hz Monitor features a smooth 100Hz refresh rate. Motion looks cleaner and faster on the screen. This makes gaming and scrolling feel more responsive. It also reduces blur during fast scenes. In addition, the monitor uses an advanced panel for rich colors. The colors remain accurate from different viewing angles. This makes photos, videos, and documents look consistent. It is great for students, creators, and office users. Furthermore, the ViewSonic VA2763-H 27″ FHD 100Hz Monitor includes eye-care features for long hours of use. Flicker-Free technology protects your eyes from strain. The blue light filter adds extra comfort during work or study. This helps you stay relaxed throughout the day. Also, the monitor has HDMI and VGA ports for simple connection. You can connect laptops, desktops, and gaming consoles easily. The setup process is fast and user-friendly. This makes the monitor suitable for home and office spaces. The design of the ViewSonic VA2763-H 27″ FHD 100Hz Monitor looks clean and modern. The slim frame gives your workspace a sleek look. It fits well on desks of all sizes. The build quality is strong and durable. Overall, the ViewSonic VA2763-H 27″ FHD 100Hz Monitor offers smooth performance, clear visuals, and eye-care comfort. It improves your work, study, and gaming experience. This monitor is ideal for anyone who wants quality and simplicity. Specifications: Display : 27″ IPS Resolution : 1920×1080 Refresh Rate : 100Hz Response Time : 1ms
Aoc Agon 24-inch WQHD 165Hz Gaming Monitor Product Details Size: 23.8 inches. Panel Type: TN (16.7 Million Colours with 170/160 º viewing angles). Resolution: 2K / WQHD (2560x1440p). Refresh Rate: 165Hz. Respomse Time: 1 ms (GTG). Aspect Ratio: 16:9. Sync Technology: Nvidia G-Sync. Brightness: 350 cd/m2. Contrast Ratio: Static: 1000:1, Dynamic: 50M:1 Anti-Glare 3H hard coating with an Ultra Narrow bezel. Adjustable Height within a 13cm range. Tilt Adjustment: -3.5° ~ +21.5°. Swivel: -20° ~ +20°. Pivots up to 90°. VESA Wall Mounting : 100x100mm. (x2) 2W built-in speakers with microphone. Ports: (x1) HDMI 1.4 (x1) DisplayPort 1.2 (x4) USB-A 3.0 (x1) USB-B (x1) 3.5mm audio jack Dimensions (incl base): 55.5 x 21.3 x 49 cm. Lowblue Light mode: Protection from eye strain without sacrificing color composition. Specifications: Aoc Agon 24-inch WQHD 165Hz Gaming Monitor Size: 23.8 inches. Panel Type: TN (16.7 Million Colours with 170/160 º viewing angles). Resolution: 2K / WQHD (2560x1440p). Refresh Rate: 165Hz.
