WiWU Infinite USB‑C to HDMI Adapter (HB004) – Sleek aluminum dongle offering 4K@60Hz output over USB‑C (DP Alt‑Mode), plug-and-play with no drivers needed.Compact, portable, and reliable—a must-have for mobile productivity, gaming, and media streaming. Model: WiWU Infinite USB‑C to HDMI Adapter (HB004) Video Output: HDMI 2.0, supports up to 4K @ 60 Hz resolution Material & Weight: Robust aluminum alloy body, compact, weighs ~69 g Compatibility: Plug-and-play connector works with USB‑C devices supporting DP Alt‑Mode—compatible with laptops, smartphones, tablets, consoles Design & Build: Slim, portable, durable—no driver/software required Use Cases: Ideal for mirroring/extending screens for presentations, streaming, gaming
LG 27 inch 240Hz Gaming Monitor 27GK750F-B is built for competitive gaming and fast-paced action. It features a 27-inch Full HD TN display with a very high refresh rate for smooth motion. Additionally, it supports NVIDIA G-Sync Compatible and AMD FreeSync. Therefore, it delivers low-latency performance and reduced screen tearing for esports gaming. The LG 27 inch 240Hz Gaming Monitor 27GK750F-B runs at 1920 × 1080 resolution with a 240Hz refresh rate and 2ms response time. Moreover, it includes a 400 nits brightness level and supports 16.7 million colors for clear visuals. It offers HDMI and DisplayPort inputs for flexible connectivity. In addition, the stand supports height, tilt, swivel, and pivot adjustments for ergonomic use. Furthermore, it includes gaming features like Black Stabilizer, Crosshair, and Dynamic Action Sync. As a result, it improves visibility and reaction speed in fast games. It also supports Motion Blur Reduction for sharper movement clarity during high FPS gameplay. Specifications: 27-inch Full HD (1920 × 1080) TN display 240Hz refresh rate for ultra-smooth gameplay 2ms response time with Motion Blur Reduction NVIDIA G-Sync Compatible and AMD FreeSync support Adjustable stand with height, tilt, swivel, and pivot
The MSI PRO MP273 27″ FHD Monitor delivers a clear viewing experience with a 27-inch Full HD display. It suits office work and daily tasks well. Moreover, the IPS panel provides consistent colors and wide viewing angles. This helps maintain image quality from different positions. The 75Hz refresh rate ensures smoother visuals during browsing and video playback. A 5ms response time keeps motion clear and stable. It includes HDMI and DisplayPort inputs for flexible connectivity. You can easily connect multiple devices when needed. Additionally, built-in speakers support basic audio use without external devices. The anti-glare screen improves comfort during long sessions. You can also mount it using VESA support to save desk space. The MSI PRO MP273 27″ FHD Monitor offers reliable performance for everyday use. Specifications: 27-inch Full HD (1920 × 1080) IPS display 75Hz refresh rate for smoother visuals 5ms response time (GTG) HDMI and DisplayPort connectivity Built-in speakers with anti-glare screen
TPLINK 300Mbps Wireless N ADSL2+ Modem Router TD-W8961N
The ViewSonic VG2239Smh 22″ 60Hz Monitor is designed to elevate your viewing experience. With its 22-inch screen, this monitor offers a perfect balance between size and performance for both work and entertainment. Enjoy clear and vibrant visuals with the ViewSonic VG2239Smh. The full HD 1080p resolution delivers sharp and detailed images, making it ideal for watching videos, working on documents, or browsing the web. With a refresh rate of 60Hz, the ViewSonic VG2239Smh Monitor ensures smooth and fluid motion. This makes it perfect for casual gaming and watching fast-paced videos without any lag or stuttering. The ViewSonic VG2239Smh Monitor features versatile connectivity options, including HDMI, DisplayPort, and VGA inputs. This allows you to easily connect your computer, laptop, or other devices for a seamless setup. Designed with ergonomics in mind, the ViewSonic VG2239Smh Monitor offers a range of adjustable features. You can tilt, swivel, and adjust the height to find the most comfortable viewing angle, reducing strain during extended use. The monitor also includes built-in speakers, providing a convenient audio solution without the need for external speakers. Enjoy clear and crisp sound for your videos, music, and other media. The ViewSonic VG2239Smh Monitor is energy-efficient, helping you save on electricity bills while reducing your carbon footprint. It meets various energy standards, making it an eco-friendly choice for your home or office. In conclusion, the ViewSonic VG2239Smh 22″ 60Hz Monitor combines stunning visuals, smooth performance, and ergonomic design for an exceptional viewing experience. Upgrade to the ViewSonic VG2239Smh today and enjoy the perfect blend of functionality and style. Specifications: Display : 22″ VA Resolution : FHD 1920 x 1080 Refresh Rate : 60Hz Response Rate : 5ms Built-in Speaker : 2x 2 Watt
C21N1509 Laptop Battery Replacement for Asus Vivobook X556UA X556UB X556UF X556UJ X556UQ X556UQK X556UR X556UV K556U K556UA K556UB K556UF K556UJ K556UQ K556UR A556U A556UA A556UB A556UF(7.6V 38Wh) About this item Battery Type: Li-ion Voltage: 7.6V Capacity:38Wh Compatible Part Number: C21N1509 C21N15WZ C21PQ9H 0B200-01750000 Fits Model:Asus Vivobook X556 X556U X556UA X556UB X556UF X556UJ X556UQ X556UR X556UV K556 K556U K556UA K556UB K556UF K556UJ K556UQ K556UR K556UV F556U F556UA F556UB F556UF F556UJ F556UQ F556UR F556UV A556U A556UA A556UB A556UF A556UJ A556UQ A556UR A556UV Series New from Manufacturer. CE-/FCC-/RoHS-Certified for safety.
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
Genuine-spec Touch Bar assembly with integrated flex cable for MacBook Pro 15″ (Models A1706 – 2017 and A1989 – 2018)—fully restores dynamic Touch ID, system controls, and app-specific functions with OEM-level fit and reliability. Compatible With: MacBook Pro 15″ (2017) – Model A1706 (Intel Core i7/i9, 4 Thunderbolt 3 ports) MacBook Pro 15″ (2018) – Model A1989 (Intel Core i7/i9, 4 Thunderbolt 3 ports) MacBook Pro 15″ (2017) – Model A1706 (Intel Core i7/i9, 4 Thunderbolt 3 ports) MacBook Pro 15″ (2018) – Model A1989 (Intel Core i7/i9, 4 Thunderbolt 3 ports) Includes: Complete Touch Bar module with pre-attached flex cable, integrated Touch ID sensor (doubles as power button), and ambient light sensor—ready for direct connection to the logic board. Full Functionality: Restores all Touch Bar features including dynamic app controls, system brightness/volume sliders, Siri, and fingerprint authentication via Touch ID. Color Match: Available in Space Gray and Silver—select the finish that matches your MacBook’s top case. OEM-Quality Build: Matches Apple’s original dimensions, sensor alignment, and surface texture—ensures seamless integration with macOS and consistent responsiveness. Installation Note: Requires full top case disassembly. The flex cable routes under the left speaker and connects near the logic board—precision is critical to avoid damage. Recommended for experienced technicians.
First, it delivers WQHD resolution (2560 × 1440) for sharp, detailed visuals. Also, its 320 Hz refresh rate ensures smooth motion with no visible blur in fast games. Moreover, a rapid 0.5 ms GtG response lets you react instantly during competitive matches. In addition, the monitor uses a Rapid IPS panel for bright, vibrant colors and wide viewing angles. Furthermore, it supports DisplayHDR 400 for enhanced contrast and richer color depth. Another highlight is Adaptive‑Sync, which minimizes tearing and stuttering in fast action. Also, it includes AI Vision tech to boost visibility in dark scenes automatically. The monitor offers HDMI 2.1 and DisplayPort 1.4a ports, making connectivity easy. Plus, its PiP/PbP support lets you view multiple sources at once. Also, the stand allows tilt adjustment from -5° to 20° for user comfort. The slim bezels deliver a sleek, immersive look that fits modern setups. Furthermore, the anti‑glare coating reduces reflections under bright lights. Also, it has headphone‑out support for private audio use. In reviews, users praised its color and speed but noted the stand feels a bit wobbly. Moreover, independent testing confirmed its fast refresh and solid brightness range. In summary, the MSI MAG 275QF X32 delivers pro‑level speed, color, and usability for gamers. Finally, it is ideal for competitive play, esports, and immersive 2K experiences. Specifications: Display : 27″ Rapid IPS Resolution : 2560 x 1440 (WQHD) Refresh Rate : 320Hz Response Rate : 0.5ms (GTG)
The BYL-2207 2-in-1 LAN adapter provides fast and stable wired internet through a Gigabit Ethernet port using either USB-C or USB 3.0. Perfect for laptops, MacBooks, and PCs without an Ethernet port, it ensures smooth streaming, online meetings, and reliable network performance. The BYL-2207 2-in-1 Type-C / USB 3.0 to Gigabit LAN Adapter is designed for users who need a reliable wired connection on modern laptops and devices. It supports both USB-C and USB 3.0, making it compatible with a wide range of systems including MacBooks, ultrabooks, and desktops. With Gigabit Ethernet speed, it provides faster and more stable internet compared to Wi-Fi, making it ideal for work, gaming, and streaming. 2-in-1 Connector (USB-C + USB 3.0) for wide compatibility Gigabit Ethernet Port (RJ45) for fast and stable wired internet High-Speed Performance supports up to 1000Mbps network speed Plug & Play installation on most systems Compact & Portable Design easy to carry anywhere Ideal for Work & Streaming improves stability for meetings and downloads Reliable Connection reduces lag compared to Wi-Fi Ideal for MacBooks, laptops, ultrabooks, desktops, and tablets that need a stable wired internet connection. Perfect for online meetings, remote work, gaming, IPTV, streaming, and downloading.
A compact and reliable pre-owned Lenovo ThinkPad L390 with 13.3" display, 8th Gen Core i7, 8GB RAM, and 256GB SSD—ideal for mobile professionals and students who need performance and portability in a durable business laptop.
The XPPen 4K UHD Artist Pro 19 Gen2 is a professional pen display designed for artists, designers, and creative professionals.It features a 19-inch 4K UHD screen with vibrant colors and sharp details, providing a high level of precision for digital artwork. Moreover, its fully laminated display reduces parallax for accurate pen tracking. This pen display comes with a battery-free stylus that offers 8192 levels of pressure sensitivity. Additionally, tilt recognition allows natural brush strokes and smooth drawing experiences. The anti-glare screen minimizes reflections in bright environments, making it easier to work for long hours. HDMI and USB-C connectivity ensure compatibility with most computers and laptops. Furthermore, the adjustable stand allows you to work at a comfortable angle. XPPen’s custom shortcut keys increase workflow efficiency for professional projects. This display is ideal for illustrators, animators, graphic designers, and creative professionals. Therefore, it supports digital painting, photo editing, and animation tasks. Finally, it combines high-resolution visuals, precise stylus control, and ergonomic design for professional use. Specifications: 19″ 4K UHD (3840 × 2160) fully laminated display for sharp and vivid visuals Battery-free stylus with 8192 levels of pressure sensitivity Tilt recognition for natural brush strokes HDMI + USB-C connectivity for versatile setup Adjustable stand and customizable shortcut keys for comfort and efficiency 156% sRGB Graphic Tablet with 1.07 Billion Colors
HP M24fwa Monitor Overview The HP M24fwa is a 24-inch Full HD monitor designed for modern workspaces. It combines a slim design with clear visuals. As a result, it suits offices, home use, and study setups. 24-Inch Full HD Display This monitor features a 24-inch Full HD resolution. Therefore, text appears sharp and easy to read. Moreover, images look clear and vibrant. Because of this, it supports long working and browsing sessions. In addition, wide viewing angles keep content visible from different positions. As a result, collaboration becomes easier. Smooth and Comfortable Viewing The HP M24fwa delivers smooth performance for daily tasks. As a result, scrolling and multitasking feel natural. Furthermore, the display maintains balanced brightness. This improves overall viewing comfort. Eye Comfort and Anti-Glare Protection This monitor includes eye comfort features. Therefore, it helps reduce eye strain during extended use. In addition, the anti-glare screen limits reflections. As a result, the display stays clear in bright rooms. Connectivity and Easy Setup The HP M24fwa includes HDMI connectivity. As a result, it connects easily to laptops and desktops. Moreover, setup remains quick and simple. Therefore, users can start working immediately. Slim Design and Mounting Support The monitor features a slim and modern design. In addition, it supports VESA mounting. As a result, users can save desk space and create flexible setups. Ideal for Daily Use This monitor focuses on clarity and reliability. Moreover, it suits office work, studying, and media viewing. In conclusion, it offers a practical and stylish display solution. Specifications: Display: 23.8-inch IPS panel with 178-degree ultra-wide viewing angles. Resolution: FHD (1920 X 1080) at 75Hz refresh rate. Visual Quality: 300 nits brightness, 1000:1 contrast ratio, and 99% sRGB color gamut for accurate, vibrant, and consistent colors. Gaming/Performance: AMD Free Sync technology reduces screen tearing and stuttering
Samsung Smart Monitor M8 M80F 32″ features a 4K (3,840 × 2,160) display with vivid visuals and high detail. Additionally, the VA panel offers wide viewing angles and consistent color across the screen. This monitor blends productivity and entertainment in a single screen. Moreover, the smart functions include apps, voice interaction, and built‑in smart services without needing a PC. With Tizen OS, users can stream content, control smart devices, and access multitasking features. The SlimFit camera enhances video calls without extra hardware. Furthermore, smart AI picture and voice tools adjust visuals and audio for comfort and clarity. The USB‑C port supports video and up to 65 W power delivery for connected devices. The ergonomic stand lets users adjust height, tilt, and pivot for proper viewing. Finally, Adaptive Sound Pro speakers deliver audio directly from the monitor. Eye Saver Mode and Flicker Free tech help reduce eye strain during long use. This monitor also supports wireless display connection and smart home control via SmartThings. Specifications: 32″ 4K UHD (3,840 × 2,160) display with wide viewing angles and consistent color Built‑in smart features with Tizen OS for streaming and apps without a PC SlimFit camera for video calls USB‑C video with 65 W power delivery and multiple connectivity options Adaptive Sound Pro speakers with Eye Saver Mode and Flicker Free technology
Candc DC-C2 Lavalier Dual Head Mic Buy Online in Qatar, record high quality sounds using this branded duel mic. Candc DC-C2 is a Dual Omnidirectional lavalier microphone, designed for Smartphones, DSLR, Camcorders, Audio recorders PC, etc. PRODUCT DETAILS OF CANDC DC-C2 LAVALIER COLLAR MICROPHONE FOR CANON NIKON DSLR CAMCORDER
Viewsonic VA2406-MH 24” The Viewsonic VA2406-MH 24” is a 24” Full HD monitor with HDMI . and VGA input for business or home usage.Delivering a stunning image quality . this monitor provides six ViewMode presets that deliver optimized screen performance based on your needs. The eye care technology that comes standard with all VA monitors helps to eliminate eyestrain from extended viewing periods. A VESA-compatible mount makes this monitor is easy to setup on the wall or with a wide range of industry-standard mounts. Viewsonic VA2406-MH 24” Viewing Clarity from Wide Angles Enjoy superb performance and better viewing quality from horizontal to vertical angles. With SuperClear® Vertical Alignment panel technology, the monitor remains clear and in good contrast color . from 178° all around, whether you are looking at the screen from above, below, the front. Viewsonic VA2406-MH 24” Full HD 1080p Full HD 1920×1080 resolution creates unbelievably clear pixel-by-pixel image performance. Experience amazing clarity and detail while working, gaming, or enjoying the latest entertainment. Comfortable Viewing Flicker-Free technology and a Blue Light Filter help to eliminate eye strain from extended viewing periods. Color Rendering Options ViewSonic’s ViewMode feature offers “Game”, “Movie”, “Web”, “Text”, and “Mono” presets. These presets enhance gamma curve, color temperature, contrast, and brightness to deliver an optimized viewing experience for different uses. Low Energy Consumption Designed for energy efficiency in mind, ViewSonic’s Eco Mode results in a smaller carbon footprint and reduced office overhead costs. Specifications Viewsonic VA2406-MH 24” Display Size (in.): 24 Viewable Area (in.): 23.8 Panel Type: VA Technology Resolution: 1920 x 1080 Resolution Type: FHD (Full HD) Static Contrast Ratio: 5,000:1 (typ) Dynamic Contrast Ratio: 50M:1 Light Source: LED Brightness: 250 cd/m² (typ) Colors: 16.7M Color Space Support: 8 bit (6 bit + FRC) Aspect Ratio: 16:9 Response Time (Typical GTG): 4ms Viewing Angles: 178º horizontal, 178º vertical Backlight Life (Hours): 30000 Hrs (Min) Curvature: Flat Refresh Rate (Hz): 75 Blue Light Filter: Yes Flicker-Free: Yes Color Gamut: NTSC: 72% size (Typ) sRGB: 104% size (Typ) Pixel Size: 0.275 mm (H) x 0.275 mm (V) Surface TreatmenViewsonic VA2406-MH 24” t: Anti-Glare, Hard Coating (3H) Compatibility PC Resolution (max): 1920×1080 Mac® Resolution (max): 1920×1080 PC Operating System: Windows 10/11 certified; macOS tested Mac® Resolution (min): 1920×1080 Connector VGA: 1 3.5mm Audio Out: 1 HDMI 1.4: 1 Power in: DC Socket (Center Positive) Specifications: Key Features SuperClear® VA panel Eye-care technology for comfortable viewing Eco-mode for low energy consumption ViewMode color rendering options HDMI and VGA inputs for connectivity HD 24″ Display 1 year warranty Manufacturer Link
The LG 27GS65F-B 27″ 1ms 180Hz Gaming Monitor delivers smooth and responsive performance for gamers and entertainment enthusiasts. Its large 27-inch screen provides an immersive experience with sharp and vibrant visuals, making games, movies, and work more engaging. Moreover, the fast 180Hz refresh rate ensures fluid motion during intense gaming sessions, giving you a competitive advantage. This monitor features a 1ms response time that reduces motion blur and ghosting, allowing for faster reaction times in fast-paced games. Additionally, the display offers accurate colors and wide viewing angles, making it ideal for gaming, creative work, and streaming. Its sleek and modern design complements any gaming setup or home office. The LG 27GS65F-B includes multiple connectivity options, allowing easy connection to PCs, consoles, and other devices. Furthermore, ergonomic tilt adjustments provide comfort during long gaming sessions. Therefore, it is perfect for competitive and casual gamers alike. Finally, it combines fast performance, vivid visuals, and user-friendly design for an excellent gaming experience. Specifications: Display : 27″ VA Resolution : QHD (2560 x 1440) Refresh Rate : 180Hz Response Rate : 1ms GTG Curvature : 1000R
Arabic Silicone Keyboard Skin Cover for MacBook Pro 13" A1708 Without Touch bar and MacBook 12" A1534 with Retina Display US Layout (Black) Arabic Silicone Keyboard Skin Cover for MacBook Pro 13″ A1708 Without Touch bar and MacBook 12″ A1534 with Retina Display US Layout (Black) About this item Arabic language silicone keyboard skin, US version, perfect fit for your MacBook 12″ A1534, which was released in 2015 & new MacBook Pro 13-Inch 13″ Model A1708 without/no Touch Bar, which was released in 2016; Do not fit for Europe Version MacBook Handmade Skin – XSKN is the original Manufacturer of these “Keyboard Art Skin” silicone covers. They are durable, thin and soft with a cashmere feel. The keys fit snug over the keyboard, smooth surface treatment, suit for regular laptop user who types a lot and quickly Each XSKN silicone skin is heat molded to ensure, each color is paints taking hand screened using silicone paint which is heat fuses into the silicone keyboard skin to become one, making it Soft, ultra-thin, durable and easy to washable High quality silicone raw material assure no extension with longtime using. Every detail clearly prinited, imported ink keep it looking good, rubber coating help to remain in good condition Aside from being beautiful they protect your keyboard from spills, crumbs, animal hair and dust. Washable, can be cleaned easily
Transparent 2.5" USB 3.0 HDD/SSD Enclosure – Supports SATA drives up to 6TB with UASP and tool-free design.Fast, plug-and-play storage case using JMS578 chipset with crystal-clear ABS shell. Transparent 2.5″ USB 3.0 HDD/SSD Enclosure – Supports SATA drives up to 6TB with UASP and tool-free design.Fast, plug-and-play storage case using JMS578 chipset with crystal-clear ABS shell. Model: 2.5″ HDD/SSD Enclosure with JMS578 Chipset Material: Transparent ABS Plastic (durable and lightweight) Interface: USB 3.0 (backward compatible with USB 2.0 & 1.1) Chipset: JMS578 (JMicron) – supports UASP for faster data transfer Drive Compatibility: 2.5″ SATA I/II/III HDD or SSD Supports up to 6TB capacity Fits 7mm or 9.5mm thick drives Drive Compatibility: 2.5″ SATA I/II/III HDD or SSD Supports up to 6TB capacity Fits 7mm or 9.5mm thick drives Data Transfer Rate: Up to 5Gbps via USB 3.0 UASP support enables up to 20% faster transfers (with UASP-enabled OS) Data Transfer Rate: Up to 5Gbps via USB 3.0 UASP support enables up to 20% faster transfers (with UASP-enabled OS) Tool-Free Design: No screws needed – easy slide-in installation Hot Swappable: Plug and play, no drivers needed for most systems LED Indicator: Blue light for power and activity status Operating Systems: Windows 7/8/10/11, macOS, Linux Dimensions: Approx. 125 x 80 x 14 mm Cable Included: USB 3.0 cable (typically 30–50 cm)
Ultra Thin Arabic Keyboard Cover Skin for MacBook Pro 13 Inch 2022 2021 2020 (Apple M2 Chip/Apple M1 Chip A2338/A2289/A2251) and 2019 MacBook Pro 16 Inch (Model A2141) Protector (Black) Ultra Thin Arabic Keyboard Cover Skin for MacBook Pro 13 Inch 2022 2021 2020 (Apple M2 Chip/Apple M1 Chip A2338/A2289/A2251) and 2019 MacBook Pro 16 Inch (Model A2141) Protector (Black) About this item [√] COMPATIBLE WITH: (1) 2022 MacBook Pro 13-Inch with Apple M2 processor, (2) MacBook Pro 13-Inch 2021 2020 with Apple M1 processor (model: A2338), (3) MacBook Pro 13-Inch Early 2020 released (model: A2289/A2251) and (4) 2019 MacBook Pro 16-Inch (model: A2141) [√] MORE PROTECTION for KEYBOARD: waterproof, dust-proof and dirt-proof design can prevent liquid, dust, cigarette ash, biscuit crumbs falling onto your keyboard to affect your keyboard’s life. [√] ACCURATE KEYS: every key is specially molded, manufactured to the quality available. Flexible, this cover is easy to apply and remove for cleaning or disinfecting. [√] 0.26 MM/0.1 IN THICKNESS: ultra thin silicone keyboard cover skin, made it easier for typing. Soft keyboard protector can weaken the sound in typing. [√] 100% CUSTOMER SERVICE and MONEY BACK GUARANTEE: if you are not fully satisfied with the products you received, please feel free to contact us. We will provide you with a 100% customer service and money back guarantee.
