The HP V28 4K Monitor delivers sharp and vivid visuals for work and entertainment.It features a 28-inch 4K UHD display that shows lifelike detail and rich color.Moreover, the slim design fits well on desks at home and in office setups. This monitor uses an advanced panel for wide viewing angles and consistent color from different positions.Additionally, the 4K resolution brings out clear text and crisp images for videos and photos.Anti-glare coating helps reduce reflections in bright lighting. The HP V28 4K also includes HDMI and DisplayPort inputs for flexible connectivity.Furthermore, tilt adjustment lets you find a comfortable viewing angle.Low blue light and flicker-free features help reduce eye strain during long use. This display suits professionals, content creators, and home users alike.Therefore, it supports productivity, creative work, and media streaming.Finally, it combines high picture quality, versatile connections, and comfort features for everyday use. Specifications: 28″ 4K UHD (3840 × 2160) panel HDMI + DisplayPort ports for flexible connection Anti-glare coating for comfortable viewing Tilt-adjustable stand for ergonomic use Wide viewing angles for consistent color
The MSI Optix AG321CR Monitor delivers immersive gaming with a 31.5″ curved display and Full HD resolution. The 1500R curvature enhances field of view and comfort. Moreover, it features a 165Hz refresh rate and 1ms response time for smooth motion. This improves clarity during fast gameplay. The VA panel provides high contrast and deep blacks. It ensures consistent colors with wide 178° viewing angles. Adaptive Sync with AMD FreeSync Premium reduces screen tearing and stutter. This delivers fluid and stable performance in games. It also includes Night Vision to improve detail in dark scenes. Anti-flicker and low blue light features help reduce eye strain. The MSI Optix AG321CR Monitor is ideal for users who want large curved visuals and smooth gaming performance. Specifications: 31.5″ Full HD VA curved panel with 1500R curvature 165Hz refresh rate for smooth gameplay 1ms (MPRT) response time for reduced motion blur AMD FreeSync Premium for tear-free performance Wide viewing angles with high contrast ratio
The ViewSonic VX2480-2K-SHD 24″ 75Hz Monitor elevates your visual experience with its stunning 24-inch display. Whether you’re working, gaming, or watching movies, this monitor delivers crisp and clear images. With a 2K resolution, the ViewSonic VX2480-2K-SHD ensures every detail is visible and vibrant. Enjoy sharp, lifelike visuals that make your content come alive, from photos to videos and everything in between. The 75Hz refresh rate provides smooth and fluid motion, making it perfect for gaming and fast-paced videos. Say goodbye to screen tearing and lag, and enjoy a seamless viewing experience with the ViewSonic VX2480-2K-SHD. Designed for versatility, this monitor offers multiple connectivity options, including HDMI and DisplayPort. Easily connect your devices and switch between them without hassle, making your workspace more efficient. The ViewSonic VX2480-2K-SHD 24″ Monitor features an ultra-slim bezel design, maximizing your screen space and creating a sleek, modern look. Its ergonomic stand allows you to adjust the height and tilt for the most comfortable viewing position. Eye-care technology in the ViewSonic VX2480-2K-SHD reduces eye strain during extended use. With features like Flicker-Free and Blue Light Filter, you can work or play for longer without discomfort. In conclusion, the ViewSonic VX2480-2K-SHD 24″ 75Hz Monitor offers a perfect blend of stunning visuals, smooth performance, and ergonomic design. Upgrade to the ViewSonic VX2480-2K-SHD today and transform your viewing experience. Specifications: Display : 24″ IPS Resolution : QHD 2560 x 1440 Refresh Rate : 75Hz Response Rate : 3.89ms
OEM-quality trackpad replacement (without flex cable) for MacBook Pro 13″ (Models A2251 and A2289, 2020) in Silver finish—engineered for precise Force Touch response, smooth multi-touch gestures, and seamless integration with the original chassis. Compatible With: MacBook Pro 13″ (2020, Two Thunderbolt Ports) – Model A2251 (Intel Core i5/i7) MacBook Pro 13″ (2020, Four Thunderbolt Ports) – Model A2289 (Intel Core i5/i7) (Note: Both models share the same trackpad assembly despite port differences.) MacBook Pro 13″ (2020, Two Thunderbolt Ports) – Model A2251 (Intel Core i5/i7) MacBook Pro 13″ (2020, Four Thunderbolt Ports) – Model A2289 (Intel Core i5/i7) (Note: Both models share the same trackpad assembly despite port differences.) Part Type: Trackpad only—does not include the flex cable, Taptic Engine, or mounting hardware. Designed for technicians who will reuse the original internal components. Finish: Silver—matches the Silver MacBook Pro 13″ top and bottom case for perfect aesthetic continuity. Force Touch Support: Fully compatible with pressure-sensitive input and haptic feedback when paired with the original Taptic Engine and logic board—ensuring full macOS gesture functionality (e.g., Force Click, Lookup, Pressure-sensitive drawing). Precision Build: Features the same glass surface texture, curvature, and micro-click mechanism as Apple’s original—delivering consistent tracking accuracy and tactile feel. Installation Requirements: Requires full bottom case disassembly and careful transfer of the original flex cable and Taptic Engine. Adhesive must be applied precisely to maintain structural rigidity and sensor alignment. Recommended for certified or experienced repair technicians only.
For gamers who crave an exceptional gaming setup, the ViewSonic VX2728J-2K is your ticket to the ultimate gaming experience. This gaming monitor is designed to bring you into the heart of your games with stunning visuals and high-speed action. First and foremost, the ViewSonic VX2728J-2K features a generous 27-inch display. With this ample screen size, you can immerse yourself in your favorite games, enjoying vibrant graphics and crisp details. But that’s not all! This gaming monitor offers a 2K resolution, ensuring that your games come to life with exceptional clarity and detail, providing you with an edge in your gaming adventures. In addition to its visual prowess, the ViewSonic VX2728J-2K boasts a fast 165Hz refresh rate up to 180hz, delivering ultra-smooth gameplay with minimal motion blur, making it effortless to stay on top of in-game challenges. Furthermore, the monitor features Adaptive Sync technology, ensuring tear-free gaming. This means that your graphics card and monitor work together seamlessly, offering you an uninterrupted and smooth gaming experience. Setting up the ViewSonic VX2728J-2K is a breeze, thanks to its versatile connectivity options. Whether you’re using a PC, gaming console, or laptop, the HDMI and DisplayPort ports have you covered. Transitioning from work to play is made easy with the monitor’s ergonomic design. You can adjust the height, tilt, swivel, or pivot the screen to find the ideal viewing angle, ensuring your comfort during extended gaming sessions. Specifications: 27 Inch QHD (2560x1440p) IPS gaming monitor with thin bezels 165hz and 180Hz refresh rate and 0.5ms (MPRT) response time for ultimate gaming experience AMD FreeSync Premium technology enables fluid and tear-free gameplay Advanced ergonomics (tilt, swivel, rotate and height) for all-day comfort HDR10 content support for deep contrast, rich color, and vibrant details The VX2728J-2K supports laptops, PCs, Macs and more with HDMI, and DisplayPort inputs Specifications: 27 Inch QHD (2560x1440p) IPS gaming monitor with thin bezels 180Hz refresh rate and 0.5ms (MPRT) response time for ultimate gaming experience AMD FreeSync Premium technology enables fluid and tear-free gameplay Advanced ergonomics (tilt, swivel, rotate and height) for all-day comfort HDR10 content support for deep contrast, rich color, and vibrant details The VX2728J-2K supports laptops, PCs, Macs and more with HDMI, and DisplayPort inputs
Experience the future of gaming with the Samsung Odyssey G9 49″ 240Hz Curved Gaming Monitor. This ultra-wide display wraps around your vision for complete immersion. With a 49-inch screen, it feels like two monitors in one. The 1000R curvature matches the natural curve of the human eye. So, your games feel more real and more engaging. Thanks to the 240Hz refresh rate, every frame loads lightning fast. No more motion blur, just smooth and fluid gameplay. Moreover, the 1ms response time helps you stay ahead of the competition. React instantly to every move, shot, or surprise attack. The Samsung Odyssey G9 49″ 240Hz Curved Gaming Monitor also supports NVIDIA G-Sync and AMD FreeSync Premium Pro. Therefore, screen tearing and stuttering are things of the past. Colors look rich and vibrant with QLED technology. Every detail pops, even in the darkest shadows and brightest highlights. In addition, the futuristic design with customizable RGB lighting looks amazing in any gaming setup. It also features multiple ports, making connectivity easy and fast. Whether you’re gaming, streaming, or multitasking, it handles it all with ease. Split-screen tools let you view and work on several apps at once. As a result, productivity and entertainment meet in one screen. If you want the best gaming experience, this is the monitor for you. Choose the Samsung Odyssey G9 49″ 240Hz Curved Gaming Monitor and level up your game today. Specifications: Display : 49″ VA Curvature : 1000R Resolution : DQHD (5,120 x 1,440) Refresh Rate : 240Hz Response Rate : 1ms GTG
0G74G Laptop Battery Replacement for Dell Latitude 5300 2-in-1 5310 7300 7400 Series Notebook OG74G 02PFPW 2PFPW 3KF82 8JYHH 11.4V 42Wh 3-Cell About this item Specification: Battery type: Li-ion. Color: Black. Voltage: 11.4V. Capacity: 42Wh/3Cell. New from Manufacturer Replace Part Number: For MXV9V 0G74G 00G74G 2PFPW 3KF82 8JYHH Compatible Models: Replacement for Dell Latitude 5300 E5300 / 5300 2-in-1 / 5310 E5310 / 5310 2-in-1 / 7300 E7300 / 7400 E7400 Series (Important Note: NOT fit for latitude 7400 2-in-1 Series) Note: The Dell laptop models on this product page are compatible with 2 battery models: 0G74G (42Wh 3-Cell 11.4V) , MXV9V(60Wh 4-Cell 7.6V). Please open the back cover of your laptop to check the original battery size and capacity before placing an order. Make sure that the battery model you need is 0G74G (42Wh 3-Cell 11.4V). Note: If the new battery is not recognized during the initial installation, please reinstall and check if the interface is fully connected. Discharge the new battery to 10-20% (not 0%), then charge and cycle 3-4 times to wake up the new battery
Genuine-spec touchpad flex cable for Apple’s 12-inch MacBook (Model A1534, Early 2015 / Early 2016 / Mid 2017)—essential for restoring full Force Touch trackpad functionality, haptic feedback, and multi-touch gesture support. Compatible With: MacBook 12″ (Early 2015) – 1.1GHz Core M MacBook 12″ (Early 2016) – 1.1GHz/1.3GHz Core M MacBook 12″ (Mid 2017) – 1.2GHz/1.3GHz Core m3/i5/i7 All share Model Number A1534 and Model Identifier MacBook8,1 / MacBook9,1 / MacBook10,1 respectively. MacBook 12″ (Early 2015) – 1.1GHz Core M MacBook 12″ (Early 2016) – 1.1GHz/1.3GHz Core M MacBook 12″ (Mid 2017) – 1.2GHz/1.3GHz Core m3/i5/i7 All share Model Number A1534 and Model Identifier MacBook8,1 / MacBook9,1 / MacBook10,1 respectively. Part Type: Touchpad flex cable only—does not include the trackpad housing, Taptic Engine, or mounting brackets. This is the ribbon cable that connects the Force Touch trackpad to the logic board. Function: Critical for Force Touch functionality—transmits pressure-sensitive input, multi-touch gestures (e.g., pinch, swipe, Force Click), and haptic feedback signals to the Taptic Engine. OEM-Quality Construction: Precisely matches Apple’s original in length, connector pitch, shielding, and routing—ensures reliable signal integrity and compatibility with macOS. Common Use Cases: Replacing a torn, creased, or liquid-damaged flex cable Restoring unresponsive or erratic trackpad behavior Completing a trackpad replacement when the original cable is unusable Replacing a torn, creased, or liquid-damaged flex cable Restoring unresponsive or erratic trackpad behavior Completing a trackpad replacement when the original cable is unusable Installation Note: Requires full bottom case removal and delicate disconnection of the ZIF connector. The cable routes tightly under the battery—extreme care is required. Recommended for experienced or certified technicians only.
The Samsung 65″ OLED S95F 4K Vision AI Smart TV | QA65S95FAUXTW is a premium television designed to deliver outstanding picture quality, intelligent processing, and immersive entertainment. It features advanced OLED technology that produces deep blacks, vibrant colors, and exceptional contrast. In addition, the 4K resolution ensures sharp detail and lifelike clarity across movies, sports, games, and streaming content. Samsung powers this TV with its advanced Vision AI processor, and it continuously optimizes picture and sound quality in real time. As a result, content appears sharper and more detailed while maintaining natural colors and balanced brightness. Furthermore, AI upscaling enhances lower-resolution content, bringing it closer to 4K quality for a better viewing experience. The OLED panel delivers precise lighting control at the pixel level, so bright highlights and dark scenes appear with impressive accuracy. Therefore, viewers can enjoy a cinematic experience with exceptional depth and realism. In addition, HDR support enhances dynamic range, making images appear more vibrant and true to life. Samsung’s Tizen Smart TV platform provides quick access to popular streaming services, gaming features, and smart home integration. Meanwhile, the ultra-slim design and minimal bezels create a modern appearance that complements any living space. Overall, the Samsung 65″ OLED S95F 4K Vision AI Smart TV | QA65S95FAUXTW combines premium OLED picture quality, advanced AI-powered enhancements, and smart connectivity. It is an excellent choice for users seeking a high-end home entertainment experience. Specifications: OLED technology delivers deep blacks, vibrant colors, and exceptional contrast Vision AI processor optimizes picture and sound quality in real time 4K resolution provides sharp detail and enhanced visual clarity HDR support improves brightness, contrast, and overall image realism Tizen Smart TV platform offers streaming apps and smart home connectivity
Genuine Apple MacBook Pro 15″ (A1990) display assembly—carefully removed from original units and tested for quality. Perfect for repairs or replacements with full OEM clarity and color accuracy. Model Compatibility: Designed exclusively for MacBook Pro 15-inch (2018–2019 models, A1990). Original Apple Display: Not a third-party or replica—this is a genuine Apple Retina display assembly pulled from verified MacBook Pro units. Retina Quality: Features a 15.4-inch LED-backlit Retina display with 2880 x 1800 resolution, True Tone technology, and P3 wide color gamut for vibrant, accurate visuals. Includes Full Assembly: Complete with front glass, LCD panel, camera module, ambient light sensor, and bezel—ready for direct installation. Professionally Tested: Each unit undergoes visual and functional inspection to ensure no dead pixels, discoloration, or backlight bleeding. Condition: “Pulled” means it was removed from a working or used MacBook Pro—cosmetically clean with full functionality, but not brand new. Ideal for Repair Technicians: Perfect for screen replacements, device refurbishment, or parts resellers requiring OEM-level quality.
LENOVO 20V/4.5A USB PIN Laptop Charger for Lenovo Thinkpad Compatible Part NO.: 45N0236, 45N0237, 45N0238, 45N0239 0B46994, 0B46995, 0B46996, 0B46997, 0B46997, 0B46998, 0B469990B47000, 0B47001, 0B47002, 0B47003, 0B47004, 0B47005, 0B47006
The MSI Modern MD342CQP 34″ UWQHD Curved Monitor is a premium ultra-wide display for productivity and immersive work. It has a 34-inch curved screen with UWQHD resolution for sharp, detailed visuals. The 1500R curvature reduces eye strain and improves viewing comfort. Its 21:9 ultra-wide screen gives extra space for multitasking and professional workflows. The IPS panel delivers vibrant, consistent colors across wide angles. It supports 100% sRGB, ideal for design, editing, and creative tasks. Connectivity options include HDMI, DisplayPort, and USB-C for flexible device use. Slim bezels and a modern design make it fit elegantly in any workspace. Flicker-free technology and an anti-glare coating protect your eyes during long sessions. Built-in speakers allow audio playback without extra devices. Tilt and height adjustments provide ergonomic comfort and a customized setup. Multiple windows and apps can stay open to enhance productivity. Fast response time ensures smooth visuals for videos and graphics. This monitor is perfect for professionals, content creators, and anyone needing a high-quality display. It combines style, function, and eye-care technology in one elegant package. Specifications: Display : 34″ VA. Resolution : 3440 x 1440 (UWQHD). Curvature : 1500R. Refresh Rate : 120Hz. Response Time : 1ms (MPRT) / 4ms (GTG). Ergonomics : Tilt, swivel, height adjustment, VESA mount. Audio : 2x 3W speakers, headphone jack.
The MSI Optix AG321CQR Gaming Monitor delivers immersive visuals with a 31.5″ curved display and QHD resolution. It enhances gaming with a 1500R curve for better field of view. Moreover, it features a 165Hz refresh rate and 1ms response time for smooth motion. This improves clarity in fast-paced gameplay. The VA panel provides high contrast and rich colors. It supports wide viewing angles for consistent image quality. Adaptive Sync with FreeSync Premium reduces screen tearing and stutter. This ensures fluid and stable performance during gaming sessions. It also includes anti-flicker and low blue light features for eye comfort. The adjustable stand allows tilt, swivel, height, and pivot adjustments. The MSI Optix AG321CQR Gaming Monitor is ideal for users who want immersive curved visuals and smooth performance. Specifications: 31.5″ QHD (2560×1440) VA curved panel with 1500R curvature 165Hz refresh rate for smooth gaming performance 1ms (MPRT) response time for reduced motion blur AMD FreeSync Premium for tear-free gameplay Adjustable stand with tilt, swivel, pivot, and height options
Verbatim Vi3000 512 GB NVMe SSD — high-speed PCIe 4.0 storage for desktops & laptops.• Read up to 5,000 MB/s • Write up to 3,200 MB/s • Compact M.2 2280 form factorInterface: PCIe Gen 4 × 4 NVMe 1.4 | Warranty: 3 Years | SKU: Vi3000-512G 🟣 Full Details : The Verbatim Vi3000 512 GB PCIe NVMe M.2 SSD delivers blazing-fast performance for everyday computing, gaming, and creative work. Using the latest PCIe Gen 4 × 4 NVMe 1.4 interface, it achieves read speeds up to 5,000 MB/s and write speeds up to 3,200 MB/s, making it a great upgrade for faster boot times and quicker app loading. PCIe Gen 4 × 4 NVMe 1.4 interface for ultra-fast transfer speeds Up to 5,000 MB/s read and 3,200 MB/s write performance Compact M.2 2280 design for desktops & laptops Low power consumption and quiet operation 3-year limited warranty with Verbatim reliability Works with most modern desktops and laptops that support M.2 NVMe (PCIe) drives. Fully backward compatible with PCIe 3.0 systems (at lower speeds). Verbatim Vi3000 512 GB M.2 NVMe SSD Quick installation & warranty guide
The 45W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Air stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. The 45W MagSafe 2 Power Adapter features a magnetic DC connector so if someone should trip over it, the cord disconnects harmlessly and your MacBook Air stays put safely. It also helps prevent fraying or weakening of the cables over time. In addition, the magnetic DC helps guide the plug into the system for a quick and secure connection. When the connection is secure, an LED located at the head of the DC connector lights up; an amber light lets you know that your notebook is charging, while a green light tells you that you have a full charge. An AC cord is provided with the adapter for maximum cord length, while the AC wall adapter (also provided) gives you an even easier and more compact way to travel. Designed to be the perfect traveling companion, the adapter has a clever design which allows the DC cable to be wound neatly around itself for easy cable storage. This power adapter recharges the lithium polymer battery while the system is off, on, or in sleep mode. It also powers the system if you choose to operate without a battery. Compatible only with MacBook Air featuring MagSafe 2 power port. Knowing which specific Mac model you have is important. If you are running OS X Lion (10.7) or later go to the “” menu at the top left of your screen, choose “About this Mac” then click the “More Info…” button. Your Mac model and generation will be displayed. If you are running an earlier version of OS X, you can enter your serial number here to find out which model you have. Mac Models MacBook Air (13-inch, Early 2015 – 2017) MacBook Air (11-inch, Early 2015)
The MSI MAG 256F 24.5″ 180Hz Gaming Monitor is crafted for serious gamers. With a fast 24.5-inch Full HD display, this monitor delivers exceptional clarity and performance. Its 180Hz refresh rate and 1ms response time ensure smooth, blur-free visuals, making it perfect for fast-paced games. Gamers will appreciate the 180Hz refresh rate of this monitor. It minimizes screen tearing and ghosting, providing a seamless experience in every frame. This high refresh rate, combined with a 1ms response time, means you’ll experience gaming with precision and speed. The Full HD resolution ensures sharp, clear images, bringing your games to life. This monitor also supports Adaptive Sync technology. It helps synchronize the monitor’s refresh rate with your graphics card, reducing stuttering and screen tearing. This feature is especially valuable for competitive gaming, where every millisecond counts. The design of the MSI MAG 256F 24.5″ 180Hz Gaming Monitor is sleek and gamer-friendly. It has a frameless design that maximizes screen space, allowing for immersive gaming. Its adjustable stand lets you customize the height and tilt for comfortable viewing angles, reducing neck strain during extended gaming sessions. This monitor also features multiple connectivity options, including HDMI and DisplayPort. This makes it easy to connect your gaming console or PC, giving you flexibility with your setup. Its easy navigation OSD (on-screen display) allows you to make quick adjustments to the settings. Upgrade your gaming experience with the MSI MAG 256F 24.5″ 180Hz Gaming Monitor. Enjoy fluid, responsive gameplay and impressive visuals with this reliable and stylish monitor. Specifications: Display : 24.5″ Rapid IPS Resolution : FHD (1920 x 1080) Refresh Rate : 180Hz Response Rate : 1ms GTG
The MSI MAG 272F X24 is a 27‑inch FHD gaming monitor made for fast and fluid gameplay. It delivers vibrant Full HD visuals with a rapid 240 Hz refresh rate. Furthermore, its fast 0.5 ms response time helps reduce motion blur and ghosting for clearer action. This monitor uses Adaptive‑Sync technology, which improves smoothness and reduces tearing during high‑speed gaming. In addition, its panel offers wide viewing angles and consistent color performance, helping players see details clearly from different positions. Moreover, the display includes multiple connectivity options such as DisplayPort and HDMI, allowing easy setup with gaming PCs and consoles. Ergonomic adjustments support tilt and height changes for comfortable long sessions. As a result, the MSI MAG 272F X24 enhances both competitive play and casual gaming experiences. Specifications: 27‑inch FHD (1920 × 1080) display with 240 Hz refresh rate 0.5 ms response time for reduced motion blur Adaptive‑Sync for smooth gaming performance Multiple connectivity options including DisplayPort and HDMI Ergonomic tilt and height adjustment for comfortable use
HP 83A Black Toner Cartridge | Works with HP LaserJet Pro M201, HP LaserJet Pro MFP M125, M127, M225 Series | CF283A
• Desk Stand LED / LCD / Plasma fits most 17″ to 30″ displays • Articulating stand with Rotation 360°, Swivel ±90° and Tilt angle +85° to 30° • Upright lift distance 10 ” (260mm) • Maximum extension 21 ” (535mm) • Supports load from 2 to 9 kg • Mounting VESA compliance 75×75, 100×100 mm 1 Year Warranty manufacturer link
The Samsung Odyssey G9 LS49DG952SMXUE features a 49-inch OLED panel with Dual QHD resolution (5120 × 1440) and a 32:9 aspect ratio. The ultrawide format provides the screen space of two 27-inch QHD monitors in a single display, making it suitable for gaming, multitasking, and content creation. The monitor supports a refresh rate of up to 240Hz and a response time of 0.03ms GTG. As a result, fast-moving content appears smoother and more responsive during competitive gaming. In addition, AMD FreeSync Premium Pro support helps reduce screen tearing and stuttering. Samsung uses OLED panel technology to provide per-pixel lighting control. Therefore, the display delivers deep blacks, high contrast, and accurate color reproduction without a traditional backlight. The monitor includes Samsung Smart TV functionality powered by Tizen OS. Users can access streaming applications and smart features directly from the monitor without connecting a PC. Connectivity includes HDMI, DisplayPort, USB ports, Wi-Fi, Bluetooth, and Ethernet support. In addition, the monitor supports Picture-by-Picture and Picture-in-Picture modes for multitasking across multiple input sources. This model focuses on high-refresh-rate gaming, OLED image quality, and integrated smart features within a 49-inch curved ultrawide display. Specifications: 49-inch OLED panel with 5120 × 1440 Dual QHD resolution 240Hz refresh rate and 0.03ms GTG response time 32:9 ultrawide aspect ratio AMD FreeSync Premium Pro support Tizen OS with HDMI, DisplayPort, USB, Wi-Fi, and Bluetooth connectivity
