The Samsung 75″ QLED 4K Q60F Smart TV QA75Q6FAAUXTW delivers a large-screen entertainment experience with advanced QLED display technology. It produces bright colors, sharp details, and impressive clarity, making movies, sports, and games more enjoyable on the expansive 75-inch screen. QLED technology uses Quantum Dot enhancement to improve color accuracy and brightness. As a result, images appear vivid and lifelike across a wide range of content. Dark scenes retain detail, while bright scenes remain balanced and clear. This helps create a consistent viewing experience throughout the day. The 4K UHD resolution provides four times the detail of Full HD content. Therefore, images look sharper and more refined. In addition, Samsung’s processing technology enhances lower-resolution content, helping it appear clearer and closer to 4K quality. HDR support improves contrast and expands the range of visible colors. This allows brighter highlights and deeper shadows, creating a more realistic picture. Fast-moving scenes also appear smoother, making sports broadcasts and action movies more enjoyable to watch. The Smart TV platform offers convenient access to popular streaming services, apps, and connected home features. It responds quickly and provides an easy-to-use interface for everyday entertainment. In addition, the slim design and narrow bezels give the Samsung QLED 75 4K Q60F Smart TV QA75Q6FAAUXTW a modern appearance that complements a variety of living spaces. Overall, this Samsung QLED TV combines large-screen immersion, vibrant color performance, and smart connectivity for a reliable home entertainment solution. Specifications: QLED technology delivers vibrant colors and enhanced brightness 75-inch 4K UHD display provides immersive viewing HDR improves contrast and image realism Smart TV platform supports streaming apps and connected features Slim design complements modern living spaces
The Horion Interactive Flat Panel 65″ transforms any space into a dynamic and interactive environment. Whether in classrooms or conference rooms, it enhances collaboration and productivity. Featuring a stunning 65-inch 4K UHD display, the Horion Interactive Flat Panel delivers crystal-clear visuals and vibrant colors. This ensures every detail is visible, making presentations and lessons more engaging. The Interactive Flat Panel comes with advanced touch technology, allowing multiple users to interact with the screen simultaneously. This fosters teamwork and encourages active participation. With built-in annotation tools, the Interactive Flat Panel 65″ makes it easy to highlight key points and add notes during presentations. These tools are intuitive and user-friendly, making it accessible for everyone. Connectivity is seamless with the Interactive Flat Panel. It offers multiple ports, including HDMI, USB, and wireless options, ensuring compatibility with various devices. This flexibility makes it easy to integrate into your existing setup. The Interactive Flat Panel 65″ is designed for ease of use. Its user-friendly interface and responsive touch screen make it simple to navigate and control. Whether you’re a teacher or a business professional, you’ll find it easy to use. In addition, the Interactive Flat Panel includes powerful built-in speakers, delivering clear and immersive audio. This enhances the overall experience, making it ideal for multimedia presentations. In conclusion, the Horion Interactive Flat Panel 65″ combines stunning visuals, interactive features, and ease of use for a superior collaborative experience. Upgrade your space with the Interactive Flat Panel and boost engagement and productivity today. Specifications: Display : 65″ Resolution : 4K (3840×2160) Refresh Rate : 60Hz CPU : Octacore Ram : 8GB Memory : 128GB GPU : Mali G52-MP8 OS : Android 13.0 Sensor : Infrared, NFC, Light Sensor
BenQ GW2791 27″ 1080p FHD 100Hz IPS Eye-Care Monitor | 3 Years Warranty is designed for work, study, and everyday entertainment. It combines a Full HD IPS panel, a 100Hz refresh rate, and BenQ Eye-Care technologies to deliver comfortable viewing throughout the day. The monitor features a 27-inch IPS display with a Full HD resolution of 1920 × 1080. Therefore, it produces clear images, accurate colors, and wide 178° viewing angles. In addition, it covers 99% of the sRGB color space, making it suitable for office work, web browsing, and media consumption. Moreover, the 100Hz refresh rate and 5ms GtG response time provide smoother motion when scrolling, streaming videos, or playing casual games. As a result, everyday use feels more responsive and fluid. BenQ Eye-Care technologies include Flicker-Free, Low Blue Light, EyeSafe 2.0 certification, and an ePaper mode. Therefore, the monitor helps reduce eye strain during long work or reading sessions. In addition, the anti-glare matte screen minimizes reflections for improved viewing comfort. The monitor includes one HDMI 1.4 port, one DisplayPort 1.2 input, and a headphone jack for flexible connectivity. Furthermore, the stand supports tilt adjustment, and the monitor is VESA 100 × 100 mm compatible for wall or arm mounting. Finally, the BenQ GW2791 delivers smooth performance, accurate colors, and advanced eye-care features for home, office, and everyday computing. Specifications: Display: 27-inch IPS panel with 1920 × 1080 Full HD resolution Refresh Rate: 100Hz with 5ms GtG response time Color: 99% sRGB coverage with 178° viewing angles Eye Care: Flicker-Free, Low Blue Light, EyeSafe 2.0, and ePaper mode Connectivity: HDMI 1.4, DisplayPort 1.2, headphone jack, and VESA 100 × 100 mm support
The MSI MAG 244C 24″ FHD 180Hz Curved Gaming Monitor delivers smooth and immersive visuals for gaming, movies, and everyday use. Its Full HD resolution shows clean details in games, videos, and work tasks. The 24-inch curved screen wraps slightly around your view for deeper immersion. This helps you stay focused and engaged while playing or working. Moreover, the MSI MAG 244C 24″ FHD 180Hz Curved Gaming Monitor features a fast 180 Hz refresh rate. This refresh rate makes motion look fluid and responsive. Fast games and action scenes appear more detailed and smooth. This reduces motion blur and improves your reaction time during gameplay. In addition, the monitor offers a 1 ms (MPRT) response time. This helps reduce ghosting and keeps fast visuals clear. Your controls feel responsive and snappy. This makes it easier to compete in shooters and other fast-paced games. Furthermore, the MSI MAG 244C 24″ FHD 180Hz Curved Gaming Monitor uses a VA panel with deep contrast. Blacks appear darker and scenes look richer for games and movies. The panel also supports a wide color gamut for decent color reproduction. This improves visuals for media, gaming, and creative content. Also, the monitor supports adaptive sync technology. This sync helps prevent screen tearing and stuttering when your GPU’s frame rate changes. The curved screen and smooth frame rate combine to deliver a more immersive gaming experience. The design of the MSI MAG 244C 24″ FHD 180Hz Curved Gaming Monitor is clean with slim bezels. It fits well on most desks without taking too much space. The stand allows tilt adjustment so you can set a comfortable viewing angle. Overall, the MSI MAG 244C 24″ FHD 180Hz Curved Gaming Monitor blends speed, clarity, and immersion in one strong display. It improves gaming performance, enhances media enjoyment, and works well for everyday computing. This monitor is ideal for gamers and users who want responsive, smooth visuals without a large screen footprint. Specifications: Display : 24″ VA Resolution : FHD 1920×1080 Refresh Rate : 180Hz Response Time : 1ms Curvature : 1500R
Premium bilingual keyboard replacement for MacBook Pro 13″ (A1278, 2009–2012) — choose US/Arabic or UK/Arabic layout. Features durable scissor-switch keys, OEM fit, and clear dual-language legends for seamless typing in English and Arabic. Compatible With: MacBook Pro 13-inch (Model A1278) from Late 2009, Mid 2010, Early 2011, and Mid 2012 (Model Identifiers: MacBookPro5,5, 6,2, 8,1) Layout Options (select at purchase): US/Arabic: Primary legends in Arabic, secondary (top-left) in US QWERTY — includes @, #, and standard US symbols. UK/Arabic: Primary legends in Arabic, secondary in UK QWERTY — includes £ symbol, taller Enter key, and UK-specific punctuation. Both versions feature full Arabic character set US/Arabic: Primary legends in Arabic, secondary (top-left) in US QWERTY — includes @, #, and standard US symbols. UK/Arabic: Primary legends in Arabic, secondary in UK QWERTY — includes £ symbol, taller Enter key, and UK-specific punctuation. Both versions feature full Arabic character set Keyboard Type: Traditional scissor-switch mechanism—reliable, tactile, and serviceable (pre-Butterfly design). Backlighting: Included on Early 2011 and Mid 2012 models only. Keycaps are translucent for even lighting. (Note: Late 2009 & Mid 2010 A1278 models did not support backlighting—keyboard will still function, but lighting requires compatible hardware.) Build & Fit: Precision-molded frame with correct screw mounts and alignment pegs—ensures flush, secure installation in the original top case with no rattling. Installation: Keyboard is screw-mounted (no adhesive)—one of the most DIY-friendly MacBook keyboards. Requires top case access and battery disconnect. Suitable for intermediate users or professionals.
Arabic MacBook Pro Keyboard Cover 2023 2022 14 inch A2779 A2442 - Pro 16 inch A2780 A2485 M1-2022 MacBook Air Keyboard Cover 13.6 inch M2 A2681 Silicone Skin Ultra Thin, Arabic Language Arabic MacBook Pro Keyboard Cover 2023 2022 14 inch A2779 A2442 – Pro 16 inch A2780 A2485 M1-2022 MacBook Air Keyboard Cover 13.6 inch M2 A2681 Silicone Skin Ultra Thin, Arabic Language About this item Arabic Keyboard Layout Fits Perfectly 2023 MacBook Pro 14 inch keyboard cover A2779 A2442 M1 Pro Max Chip and Pro 16 inch A2780 A2485 2022 MacBook Air M2 keyboard skin A2681. Kuzy Mac keyboard cover have been engineered to fit snugly onto the low profile keyboard We employed the best industry standards in this Mac Book keyboard cover. Kuzy laptop keyboard covers made out of High Elastic Silicon. Every key is individually molded for a long lasting professional look. Advanced Spill and Dust Protection Soft Flexible and Washable Silicone keyboard skin makes typing quiet and soft to the touch. Flexible, environmentally smart keyboard protector design lets you roll up the MacBook keyboard cover for storage and travel. Quickly apply and remove Keyboard Cover Compatible with 14 inch MacBook Pro model A2779 A2442 also 16 inch MacBook Pro A2780 A2485 and 13.6 inch MacBook Air A2681. Maintain the longevity of your Apple device by eliminating key wear and tear with Kuzy computer keyboard covers
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.
Are you in search of a versatile monitor with advanced features? Meet the ViewSonic VG2756V-2K. This 2K 27″ monitor is designed to enhance your productivity and streamline your workflow. Transitioning to its core, the ViewSonic VG2756V-2K boasts a stunning 2560×1440 resolution, delivering crisp and clear visuals for all your tasks. Whether you’re editing documents, designing graphics, or watching videos, enjoy an immersive viewing experience. Its sleek and modern design adds a touch of elegance to any workspace. With its slim bezels and adjustable stand, you can customize the monitor to suit your ergonomic needs. Plus, its built-in webcam docking station makes video conferencing a breeze, eliminating the need for external accessories. Moving on to its display, the ViewSonic VG2756V-2K features a 27-inch screen with a 60Hz refresh rate, ensuring smooth and fluid motion during gaming and multimedia playback. Say goodbye to motion blur and ghosting, and hello to crystal-clear images. Furthermore, with versatile connectivity options including HDMI, DisplayPort, and USB-C, this monitor offers seamless compatibility with a wide range of devices. Whether you’re connecting your laptop, desktop, or gaming console, enjoy hassle-free connectivity. Transitioning to its ergonomic features, the ViewSonic VG2756V-2K is designed with your comfort in mind. Its adjustable stand allows you to tilt, swivel, and pivot the monitor to find the perfect viewing angle. Plus, its flicker-free technology and blue light filter help reduce eye strain during extended use. In summary, the ViewSonic VG2756V-2K is the perfect blend of performance, style, and functionality. Upgrade your workspace today with this feature-packed monitor and take your productivity to the next level. Specifications: Display : 27″ IPS Resolution : 2K (2560 x 1440) Refresh Rate : 60Hz Response Rate : 5ms(GTG)
The Dell OptiPlex 7050 Micro combines compact design and solid performance with an Intel Core i5 6th Gen processor, DDR4 RAM options, and SSD storage options. Ideal for business and home use, it delivers reliable speed, energy efficiency, and space-saving desktop performance.
Huawei IdeaHub Board 2 86-inch display delivers an immersive teaching and collaboration experience with large 4K visuals. It helps teachers present clearly and engage students effectively. As a result, classrooms benefit from better interaction and visibility. The 86-inch screen features 4K UHD resolution with zero-gap laminated glass. Therefore, it reduces reflection and improves clarity. Moreover, the D-LED backlight and 60Hz refresh rate ensure stable and consistent visuals. It supports up to 20 touch points using infrared multi-touch technology. In addition, smart handwriting recognition and annotation allow natural writing. The low latency writing response improves accuracy during lessons. The system includes a quad-core processor with 4GB RAM and 32GB storage. Consequently, it runs applications smoothly. It supports Android, Windows, iOS, and macOS for flexible integration. It also includes key capabilities such as 4K UHD resolution, multi-touch interaction, smart annotation tools, wide connectivity options, and cross-platform support. Huawei IdeaHub Board 2 86-inch display is built to enhance collaboration and simplify teaching. Specifications: 86-inch 4K UHD display with 3840 × 2160 resolution Supports up to 20 touch points with infrared technology Zero-gap laminated glass with D-LED backlight Low latency writing with smart annotation support Quad-core CPU with 4GB RAM and 32GB storage
Genuine-spec keyboard replacement for MacBook Air 13″ (Model A2179, 2020, Intel) — choose US QWERTY or UK QWERTY (with £ symbol). Features Apple’s reliable scissor-switch mechanism, backlighting, and OEM-fit design for seamless performance and aesthetics. Compatible With: MacBook Air 13-inch (2020, Model A2179, EMC 3597) with Intel Core i3/i5/i7 processors (non-M1). Layout Options (select at purchase): US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. US Layout: Standard QWERTY with wide Enter key, @ above 2, # above 3, and full inverted-T arrow keys. UK Layout: QWERTY with £ symbol, tall vertical Enter key, @ accessed via right Alt, and UK-specific punctuation—matches Apple’s official UK regional configuration. Keyboard Type: Traditional scissor-switch mechanism (not Butterfly, not Magic Keyboard)—robust, tactile, and serviceable, with good key travel and proven durability. Integrated Features: Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Full backlit keys for low-light use Ambient light sensor compatibility OEM-style ribbon cable pre-attached for direct logic board connection Precision Build: Molded to exact Apple specifications—ensures flush mounting, consistent key alignment, and seamless integration into the original top case. Installation Note: Keyboard is screw-mounted with light adhesive—more accessible than glued Butterfly/Magic keyboards. Requires top case access and battery disconnect. Suitable for intermediate DIYers or professional technicians. Important: This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). This is keyboard only—does not include the top case, battery, trackpad, or logic board. Not compatible with M1 MacBook Air (A2337/A2338) or M2 models (A2681/A2941). Model Verification: Confirm your device is MacBook Air A2179 (13″, Intel, 2020) via > About This Mac > Model Identifier (e.g., MacBookAir9,1).
Original MacBook Pro 13″ (A2338) Display Assembly in Silver, including LCD, Retina panel, backlight, camera, Wi-Fi antennas, hinges, and aluminum lid. Compatible with M1 MacBook Pro 13″ (2020). Ideal for replacing cracked, damaged, or faulty screens. ✔️ Complete Display Assembly: Includes LCD, digitizer, housing, hinges, webcam, and antenna modules. ✔️ Retina Resolution: 2560 × 1600 native resolution with True Tone support. ✔️ Genuine Fit for A2338: Designed specifically for the MacBook Pro 13″ (A2338) – M1 2020 model. ✔️ Accurate Color & Brightness: 500 nits brightness, P3 wide color gamut, and high contrast. ✔️ Silver Aluminum Finish: OEM-grade aluminum lid matching the original color and texture. ✔️ Plug-and-Play Replacement: No programming required — direct connector compatibility. ✔️ Ideal for Repair: Suitable for replacing damaged, flickering, bleeding, or cracked screens.
Non-slip, skid-proof rubber feet designed to perfectly fit MacBook Air models A1466, A1369, and A1370—restoring grip, stability, and protection for your laptop’s base. Keep your MacBook Air steady and scratch-free with these high-quality replacement rubber feet, engineered to match the original Apple design for MacBook Air models A1466 (2010–2017), A1369 (11″ 2010–2011), and A1370 (11″ 2011–2015). These skid-proof rubber feet provide excellent traction on desks, tables, and other smooth surfaces, preventing unwanted sliding during typing or use. Made from durable, soft-touch silicone-rubber material, they also help protect your laptop’s bottom case from scratches and reduce vibration noise. Each set includes all necessary feet (typically 5 per MacBook Air model) with pre-applied adhesive for easy, secure installation. The matte black finish blends seamlessly with your MacBook’s original aesthetic. Ideal for restoring worn, missing, or damaged feet—whether due to age, cleaning, or accidental removal—this is a simple, affordable way to maintain your MacBook’s functionality and appearance. Note: Surface must be clean and dry for optimal adhesion. For best results, gently warm the adhesive before applying.
Introducing the LG MyView Smart Monitor – your all-in-one display solution for work, entertainment, and everything in between. With its innovative features and user-friendly interface, this monitor redefines convenience and efficiency. First and foremost, versatility is the name of the game. Whether you’re working on spreadsheets, streaming your favorite shows, or gaming with friends, the MyView Smart Monitor adapts effortlessly to your needs. Transitioning between tasks is seamless thanks to its intuitive interface and quick response times. Say goodbye to cluttered desktops and hello to a streamlined workflow that maximizes productivity. Moreover, connectivity options abound. From wireless casting to multiple input ports, the MyView Smart Monitor ensures compatibility with a wide range of devices. Whether you’re using a laptop, tablet, or smartphone, connecting is hassle-free. In addition, ergonomic design features such as adjustable stands and eye-care technology prioritize your comfort and well-being during extended use. Say goodbye to eye strain and discomfort – the MyView Smart Monitor has your back. Furthermore, its sleek and modern design adds a touch of sophistication to any space, whether it’s your home office or entertainment center. Elevate your surroundings with a display that not only performs but also complements your aesthetic. In conclusion, the LG MyView Smart Monitor is more than just a display – it’s a versatile companion that enhances every aspect of your digital life. Experience the convenience, efficiency, and style it brings to the table, and unlock a world of possibilities today. Specifications: Display : 27″ IPS Resolution : 1920 x 1080 Refresh Rate : 60Hz Response Rate : 5ms GTG Speaker : 5W x2
TeamGee Portable Monitor for Laptop, 12” Full HD IPS Display, Dual Triple Monitor Screen Extender, HDMI/USB-A/Type-C Plug and Play for Windows, Chrome & Mac, Work with 13”-16” Laptops Brand TeamGee Mounting Type Desk Mount Color Black Hardware Interface USB, USB Type C, HDMI Connectivity Technology USB, HDMI Package Dimensions 14.02 x 10.04 x 3.58 inches Item Weight 5.7 pounds Manufacturer TeamGee ASIN B09NLKWDMP Item model number P2 1 Year Warranty manufacturer link
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.
The NCTS HDMI 2.0 cable (3 meters) delivers high-speed and reliable audio/video transmission with support for 4K UHD resolution. Perfect for TVs, monitors, gaming consoles, and home theater systems, it provides a stable connection and clear visuals for everyday and entertainment use. The NCTS HDMI 2.0 Cable 3M is a dependable solution for connecting devices such as laptops, PCs, gaming consoles, and media players to TVs, monitors, and projectors. Supporting 4K UHD video, this cable ensures sharp image quality and smooth performance for movies, gaming, and presentations. Its 3-meter length offers flexible setup options, making it ideal for home, office, and entertainment environments. HDMI 2.0 Standard for high-quality video and audio Supports 4K UHD Resolution for sharp and detailed visuals High-Speed Performance for smooth playback and stable signal 3M Length perfect for flexible positioning and setups Compatible with TVs, Monitors, and Projectors Ideal for PS4 / Xbox / TV Boxes / PCs Durable Build Quality designed for long-term use Plug & Play no setup required Works with all HDMI-enabled devices, including TVs, monitors, projectors, PlayStation, Xbox, laptops, PCs, receivers, and streaming devices. Ideal for users who need a longer cable for home theater setups, gaming stations, or office installations.
Barcode Reader Wireless 2D S20W Wireless 2D Barcode Scanner | S20-W Name: Wireless 2D Barcode Scanner Model: S20-W Interface: USB Color: Black
HP Series 5 524sa Monitor Overview The HP Series 5 524sa is a 23.8-inch Full HD monitor made for work and everyday entertainment. It combines clear visuals with built-in speakers. As a result, it offers a clean and simple desktop setup. 23.8-Inch Full HD Display This monitor features a 23.8-inch Full HD resolution. Therefore, text looks sharp and easy to read. Moreover, images appear clear and well balanced. Because of this, it supports long working and viewing sessions. In addition, wide viewing angles keep content visible from different positions. As a result, collaboration becomes more comfortable. Built-In Speakers for Simple Audio The HP Series 5 524sa includes integrated speakers. As a result, users enjoy sound without extra accessories. Moreover, this reduces desk clutter. Therefore, the setup stays neat and efficient. Smooth Viewing and Eye Comfort This monitor delivers smooth performance for daily tasks. As a result, scrolling feels natural. In addition, eye comfort features help reduce eye strain. Because of this, users stay comfortable during long hours. Connectivity and Easy Setup The monitor includes HDMI connectivity. Therefore, it connects easily to laptops and desktops. Moreover, setup is fast and straightforward. As a result, users can start working immediately. Slim Design and Mounting Support The slim design fits modern workspaces. In addition, VESA mounting support allows flexible placement. As a result, users can save desk space easily. Ideal for Home and Office Use This monitor focuses on clarity and convenience. Moreover, it suits office work, studying, and media viewing. In conclusion, it is a practical Full HD monitor with built-in speakers. Specifications: Size: 23.8-inch diagonal. Resolution: FHD (1920 x 1080). Refresh Rate: 100 Hz.
