Are you in the market for a gaming monitor that delivers top-notch performance without breaking the bank? Look no further than the MSI Optix MAG272CQR. In this comprehensive review, we’ll explore the features that make this monitor stand out. To start with, the MSI Optix MAG272CQR boasts a stunning 27-inch curved display, providing an immersive gaming experience. The curvature enhances your field of view, pulling you deeper into the game. Equipped with a 2560 x 1440 Quad HD resolution, this monitor delivers crisp and detailed visuals. Dive into your favorite games with clarity and precision, experiencing every detail as the developers intended. The 165Hz refresh rate ensures buttery-smooth gameplay, reducing motion blur for a competitive edge. Combined with a 1ms response time, the MSI Optix MAG272CQR is a stellar choice for fast-paced gaming scenarios. Adaptive Sync technology minimizes screen tearing and stuttering, creating a seamless and enjoyable gaming experience. Whether you’re into FPS, RPG, or MOBA games, this monitor adapts to your playstyle. Connectivity is a breeze with multiple ports, including HDMI and DisplayPort, providing versatility for various devices. The adjustable stand allows you to find the perfect viewing angle, ensuring comfort during those marathon gaming sessions. In summary, the MSI Optix MAG272CQR is a gaming monitor that ticks all the boxes – immersive display, high resolution, fast refresh rate, and adaptive sync technology. Elevate your gaming experience without breaking the bank. Make the smart choice with the MSI Optix MAG272CQR. Specifications: Size : 27″ Curve : 1500R Refresh Rate : 165Hz Response Time : 1ms
The MSI MAG 274QRF QD E2 Gaming Monitor is designed to take your gaming to the next level. With its 27-inch QHD display, you’ll enjoy crystal-clear visuals and vibrant colors that bring your games to life. This monitor features Quantum Dot technology, which enhances color accuracy and brightness. The MSI MAG 274QRF QD E2 delivers a rich and immersive visual experience. Thanks to its 165Hz refresh rate and 1ms response time, the MSI MAG Gaming Monitor ensures smooth and lag-free gameplay. You’ll experience every movement with precision, giving you a competitive edge in any game. The monitor supports NVIDIA G-SYNC technology, which synchronizes the monitor’s refresh rate with your graphics card. This eliminates screen tearing and stuttering, providing a seamless and fluid gaming experience. Designed for comfort during long gaming sessions, the MSI MAG 274QRF QD E2 features an ergonomic stand with adjustable height, tilt, and swivel. You can easily customize the monitor’s position to suit your preferred viewing angle. Connectivity is made easy with multiple ports, including DisplayPort, HDMI, and USB. This ensures compatibility with a wide range of gaming systems and peripherals, so you can set up your gaming station just the way you like it. In conclusion, the MSI MAG 274QRF QD E2 Gaming Monitor combines stunning visuals, fast performance, and ergonomic design for an unparalleled gaming experience. Upgrade to this monitor and immerse yourself in the world of gaming like never before. Specifications: Display : 27″ Rapid IPS Screen : 2560 x 1440 (WQHD) Refresh Rate : 180Hz Response Time : 1ms
LG B2B Monitor 19 inch 19MB15T is designed for business workspaces, POS systems, and daily office use. It features a 19-inch IPS display with touch screen support for simple and responsive operation. Additionally, it uses a compact design that fits small desks and retail counters. Therefore, it works well for offices, shops, and service environments. The LG B2B Monitor 19 inch 19MB15T delivers 1280 × 1024 resolution with a 5:4 aspect ratio and IPS panel technology. Moreover, it includes 250 cd/m² brightness, 14ms response time, and 178° viewing angles for clear display quality. It supports D-Sub input and USB connection for touch functionality. In addition, it includes Reader Mode and built-in power for easier daily use. Furthermore, the monitor supports tilt adjustment from 15° to 68° and VESA 75 × 75 wall mounting for flexible setup. As a result, users can improve comfort and workspace organization. It also helps reduce cable clutter with its built-in power design. Specifications: 19-inch IPS touch screen display 1280 × 1024 HD resolution with 5:4 aspect ratio 250 cd/m² brightness with 178° viewing angle D-Sub input with USB touch connection Tilt adjustment and VESA 75 × 75 mount support
GOYIY Storm Outdoor Fan Camping Fan, Blowing 30 Feet (10 Meters) Far Big Cold Wind, Powered By 20000mAh Battery With Hook, LED Lantern For Night Light, Phone Charger About this item 【Whisper-Quiet Operation】The GOYIY cordless rechargeable fan make you experience tranquility with ultra-low noise levels, measuring below 15dB on its lowest setting, ensuring a peaceful environment conducive to relaxation or sleep. 【Turbocharged Cooling Technology】Utilizing advanced turbo compression technology, this storm fan delivers a powerful breeze even from a distance of up to 10 meters, with four adjustable speeds to suit your preferences. 【 High-Capacity Battery】Equipped with a 20000mAh large-capacity battery, this outdoor fan not only keeps you cool for extended periods but also serves as a portable power bank, capable of charging your phone or other devices on the go. 【Versatile Hanging / Standing Design/Remote Control 】Featuring a convenient hook design and 90˚ adjustable angle, this camp fan offers dual functionality, allowing you to hang it wherever needed. Additionally, its stable base ensures steady placement on any surface. Enjoy the convenience of controlling the fan from a distance with the included remote! 【Night Light Mode and Auto Shutdown Timer】Enhance your environment with the night light mode; this turbo fan offers two adjustable brightness levels. The lowest setting provides over 100 hours of illumination, perfect for creating a cozy atmosphere during nighttime activities. With the built-in timer feature, you can set the fan to automatically shut down after a specified period, providing convenience and energy savings. 【Durable ABS Construction】Crafted from premium ABS material, this fan is durable, shock-resistant, and life waterproof to withstand daily use, making it suitable for various indoor and outdoor settings.
L12M4E01 L12L4A02 Battery for Lenovo G50 G50-70 G50-45 Z710 G400s S510p G510s G500s G40-70 G50-30,IdeaPad Z50,IdeaPad S510p Touch,IdeaPad G505s,IdeaPad S410p About this item This battery type: Li-ion; Voltage: 14.8V Capacity: 2600MAH; Cells: 4-cell;color: Black; 100% Brand New.Fit P/N L12L4A02, L12L4E01, L12M4A02, L12M4E01, L12S4A02, L12S4E01 Compatible Models: Relacement battery for lenovo G400s G40-30 G40-45 G405s G40-70 G40-70M G410s G50 G500s G50-30 G50-45 G505s G505s G50-70 G50-70A G50-70M G50-75 G50-80 G510s G510s S410p S410p S435 S510p S510p Z40 Z40-70 Z40-75 Z50 Z50-70 Z70 Z70-70 Z70-80 Z710 Compatible P/N: Lenovo battery L12L4A02 L12L4E01 L12M4A02 L12M4E01 L12S4A02 L12S4E01 121500171 121500172 121500173 121500174 121500175 121500176 90202869 All FTYTEN products are 100% Brand New; Grade A Li-ion battery cells ensure fast charges; Rigorous quality control; Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety.
The HUAWEI IdeaHub S2-65 Interactive Display is a 65-inch smart collaboration screen designed for modern meetings and hybrid work. It combines a 4K UHD touchscreen with integrated conferencing tools. Additionally, it supports smooth writing, video meetings, and wireless collaboration in one device. Moreover, it delivers ultra-clear 4K resolution for sharp visuals and accurate detail. Therefore, presentations, documents, and video content appear clear and easy to read. Furthermore, it includes a built-in AI camera and advanced audio system. So, it improves remote meetings with clear voice pickup and intelligent framing of speakers. In addition, it supports wireless projection from laptops and mobile devices. Therefore, users can share content quickly without extra cables. It also includes a digital whiteboard for real-time collaboration. Also, the device runs on Huawei’s smart collaboration platform, which supports cloud meetings and multi-user interaction. Overall, the Huawei IdeaHub S2-65 delivers an all-in-one interactive display solution with strong collaboration tools, clear visuals, and smooth meeting performance for modern workplaces. Specifications: 65-inch 4K UHD interactive touchscreen Built-in AI camera for smart meeting tracking Integrated microphone and speaker system Wireless screen sharing support Digital whiteboard for collaboration
WIWU GENIUS COMBO SET BAG WITH MOUSE AND MOUSE PAD FOR 14" LAPTOP/ULTRABOOK - BLACK WIWU GENIUS COMBO SET BAG WITH MOUSE AND MOUSE PAD FOR 14″ LAPTOP/ULTRABOOK – BLACK Details: Material: plaid polyester + metal Mouse: single mode 2.4G Product weight: 14 inch / 465g Product size: 14 inches: 35*25*2cm Handbag+mouse+mouse pad Front layer multi-pocket design Better help classify items Waterproof fabric
LG 35 inch Curved UltraWide QHD Monitor 35WN65C-B is built for multitasking, productivity, and immersive viewing. It features a 35-inch curved VA display with UltraWide QHD resolution for a wider workspace. Additionally, it supports HDR10 and sRGB 99% color coverage. Therefore, it works well for office tasks, content creation, and entertainment use. The LG 35 inch Curved UltraWide QHD Monitor 35WN65C-B delivers 3440 x 1440 resolution with a 100Hz refresh rate and 5ms response time. Moreover, it includes AMD FreeSync support for smoother visuals during fast-moving content. The monitor provides USB Type-C, two HDMI ports, one DisplayPort, and headphone out for flexible connectivity. In addition, the stand supports height and tilt adjustment for better comfort during long sessions. Furthermore, the curved screen improves immersion while the UltraWide format helps users manage multiple windows at once. As a result, it improves workflow and viewing comfort in both work and entertainment setups. It also supports VESA wall mounting for flexible desk arrangement. Specifications: 35-inch curved VA UltraWide QHD display 3440 x 1440 resolution with 100Hz refresh rate HDR10 support with sRGB 99% color coverage USB Type-C, HDMI, and DisplayPort connectivity Height and tilt adjustable stand
BenQ MOBIUZ EX2710 27″ Display Screen Size 27 inch Panel Type IPS Backlight Technology LED backlight Resolution (max.) 1920×1080 Brightness (typ.) 350 nits Brightness (peak)(HDR) 400 nits HDR HDR10 Native Contrast 1000:1 Viewing Angle (L/R) (CR>=10) 178°/178° Response Times (GtG) 2 ms Response Times (MPRT) 1 ms Refresh Rate (Hz) 144 Color Gamut 99% sRGB Color Mode Cinema HDRi, ePaper, FPS, Game HDRi, HDR, M-Book, Racing game, RPG, sRGB, Standard Aspect Ratio 16:9 Display Colors 16.7 million color PPI 82 Display Screen Coating Anti-Glare Color Temperature Bluish, Normal, Reddish, User Define Gamma 1.8 – 2.6 HDCP 2.2 OSD Language Arabic, Chinese (simplified), Chinese (traditional), Czech, Deutsch, English, French, Hungarian, Italian, Japanese, Korean, Netherlands, Polish, Portuguese, Romanian, Russian, Spanish, Swedish AMA Yes Audio Built-in Speaker 2.5Wx2 Headphone Jack Yes Power Voltage Rating 100 – 240V Power Supply Built-in Power Consumption (normal) 22 W Power Consumption (max) 58 W Power Consumption (sleep mode) <0.5 W Dimension and Weight Tilt (down/up) -5˚ – 20˚ Swivel (left/right) 20˚/ 20˚ Height Adjustment Stand 130 mm Dimensions (HxWxD) (mm) 409.6 – 539.6×614.1×216.7 Dimensions (HxWxD) (inch) 16.1 – 21.2×24.2×8.5 Dimensions (HxWxD) (w/o Base) (mm) 382.2×614.1×64.1 Dimensions (HxWxD) (w/o Base) (inch) 15.1×24.2×2.5 Net Weight (kg) 6.2 Net Weight (lb) 13.7 Net Weight (w/o Base) (kg) 4 Net Weight (w/o Base) (lb) 8.8 VESA Wall Mount 100×100 mm Accessories Other Accessories QSG, Warranty Card Connectivity HDMI (v2.0) 2 DisplayPort (v1.2) 1 Eye Care Flicker-free Technology Yes Low Blue Light Yes Brightness Intelligence Plus (B.I.+) Yes Color Weakness Yes ePaper Yes Certification TUV Certificate Flicker-free, Low Blue Light Video Enjoyment HDRi Yes Professional Video Format Support Yes Specifications: BenQ MOBIUZ EX2710 27″ Screen Size 27 inch Panel Type IPS Backlight Technology LED backlight Resolution (max.) 1920×1080 Brightness (typ.) 350 nits 1 Year Warranty
The MSI MAG 274QRFW X32 is a 27-inch gaming monitor designed for fast-paced gaming. It features a 320Hz refresh rate, providing ultra-smooth motion for competitive play. Furthermore, its high-quality panel delivers vibrant colors and clear visuals for immersive gameplay. The monitor supports a 1ms response time, reducing motion blur and ghosting. In addition, adaptive sync technology ensures smooth performance without screen tearing. Gamers can enjoy both fast reactions and detailed graphics during intense sessions. It includes multiple connectivity options such as DisplayPort and HDMI, allowing easy connection to PCs and consoles. Moreover, ergonomic adjustments let users tilt, swivel, and adjust height for comfortable long gaming sessions. As a result, the MSI MAG 274QRFW X32 enhances both performance and comfort. This monitor combines speed, visual clarity, and ergonomic design, making it ideal for competitive and casual gamers alike. Specifications: 27-inch display with 320Hz refresh rate 1ms response time for reduced motion blur Vibrant panel with clear and immersive visuals Adaptive sync for smooth performance without tearing Multiple connectivity options and ergonomic adjustments
A1932 A2179 A1965 Battery for MacBook Air 13″ Retina (2018 2019, Early 2020) EMC 3184 3302 MRE82 MRE92 MVFH2 MWTJ2 MVH22 MVFM2 MVFK2 MREE2 MREC2 MREA2 MREF2 MUQT2 MUQU2 MacBookAir8,1 8,2 9,1 📄【Specification】Voltage: 11.4V. Capacity: 49.9Wh 4379mAh. Battery Type: Li-Polymer. Condition: Brand new, from high quality materials, top circuit boards and smart chip. 🔋【Replace Part Number】A1965 A1932(EMC 3184) A2179(EMC 3302) 3ICP4/63/119 MacBookAir8,1 MacBookAir8,2 MacBookAir9,1. 💻【Compatible Models】Only fit for MacBook Air 13″ (Model A1932 & Model A2179) Release 2018 2019 2020, fit for MRE82LL/A, MVFH2LL/A, MVFM2LL/A, MVFK2LL/A, MVFJ2LL/A, MVFN2LL/A, MVFL2LL/A, MREE2LL/A, MREC2LL/A, MREA2LL/A, MREF2LL/A, MRE92LL/A, MWTJ2LL/A, MVH22LL/A, MVH52LL/A, MVH42LL/A, MWTL2LL/A, MWTK2LL/A. Please kindly check the model number at the bottom of your laptop (A****). NOT FIT FOR MODEL A2337. 💻【ANTIEE Promise】Each products has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety. About 500 recharge cycles over the life.
BenQ ZOWIE XL2566X+ 24.1” Fast TN 400Hz DyAc 2 Gaming Monitor is a competitive esports display designed for FPS players who need maximum motion clarity, fast response, and stable performance in high-FPS games. It uses a 24.1-inch Full HD (1920 × 1080) Fast TN panel. Therefore, it delivers very low motion blur and fast pixel response, which helps track fast-moving targets more clearly in games like CS2 and Valorant. Moreover, it supports a 400Hz refresh rate. As a result, it provides extremely smooth motion when the system can deliver very high frame rates. In addition, DyAc 2 technology reduces motion blur during fast camera movement and recoil control, improving visual clarity in FPS gameplay. The monitor includes esports-focused tools such as Black eQualizer and Color Vibrance. Therefore, it improves visibility in dark scenes and helps highlight enemies more clearly. In addition, the XL Setting to Share feature allows quick preset switching for different games. Furthermore, it includes an ergonomic stand with height, tilt, and swivel adjustment. As a result, players can fine-tune positioning for long competitive sessions. In addition, it supports HDMI 2.0 and DisplayPort 1.4 for full performance compatibility. Finally, the BenQ ZOWIE XL2566X+ focuses on competitive precision, ultra-high refresh rate performance, and motion clarity for serious esports players. Specifications: Display: 24.1-inch Full HD (1920 × 1080) Fast TN panel Refresh Rate: 400Hz for ultra-smooth motion Motion Tech: DyAc 2 for reduced blur in fast FPS gameplay Esports Tools: Black eQualizer and Color Vibrance for better visibility Design: Ergonomic stand with height, tilt, and swivel adjustment
90W AC Charger Fit for Acer Aspire Z 24 Z24-890 Z24-880-UR13 Z22-780 Z24-890-UR11 Z24-890-UA91 Z24-890-UR13 Z24-890-UR16 Aspire 7 A715-76-765N A715-76-73L8 Laptop Adapter Power Supply Cord
A sleek and secure pre-owned Dell Latitude 7490 with 14" display, 8th Gen Core i5, 8GB RAM, and 128GB SSD—designed for business professionals who need portability, durability, and enterprise-grade performance.
Acer KA222Qbi The Acer KA222Qbi entry-level series provide a superb user experience and don’t compromise . on quality. With a choice of display size and a ZeroFrame. design it is ideal for use in homes and offices. Whether it’s running productivity apps or playing games this monitor has it all. Viewable Screen Size Acer KA222Qbi 54.6 cm (21.5″) Aspect Ratio 16:9 Response Time 1 ms VRB Backlight Technology LED Horizontal Viewing Angle 178° Vertical Viewing Angle 178° Panel Technology In-plane Switching (IPS) Technology Frequency (Horizontal/Vertical) 30KHz-85KHz/48Hz-75Hz Pixel Pitch 0.25 mm Tilt Angle -5° to 15° Maximum Adjustable Height No Video Maximum Resolution 1920 x 1080 Native Contrast Ratio 1,000:1 Dynamic Contrast Ratio 100,000,000:1 Colour Supported 16.7 Million Colours Colour Depth 8-bit Color Gamut 72% NTSC Dynamic Contrast Ratio 100,000,000:1 Brightness 250 cd/m² Tearing Prevention Technology AMD FreeSync™ (HDMI VRR) Interfaces/Ports Acer KA222Qbi VGA Yes HDMI Yes Power Description Standby Power Consumption (Energy Star) 270 mW Off-Mode Power Consumption (Energy Star) 210 mW Operating Power Consumption (Energy Star) 15.50 W Miscellaneous Environmental Certification MPR II Package Contents 1 x KA222Q Widescreen LCD Monitor 1 x Power Cord(EURO/UK) 1 x VGA Cable Physical Characteristics Colour Black VESA Mount Compatible Yes VESA Mount Standard 100 x 100 Height 295 mm Width 490 mm Depth 65 mm Weight (Approximate) 3.09 kg Weight with Stand (Approximate) 3.44 kg Specifications: Specifications 21.5″ ZeroFrame FreeSync 1ms, IPS 1 year warranty
Step into the world of unparalleled gaming visuals with the AOC 24G4 24″ 180Hz Gaming Monitor. This cutting-edge display is designed to elevate your gaming experience to new heights. Boasting a 180Hz refresh rate, the AOC 24G4 ensures ultra-smooth gameplay, minimizing motion blur and providing a competitive edge. Immerse yourself in fluid graphics for a truly captivating gaming session. Equipped with a 24-inch screen, this gaming monitor strikes the perfect balance between size and clarity. Enjoy crisp details and vibrant colors, enhancing every pixel of your favorite games. Featuring AMD FreeSync technology, the AOC 24G4 synchronizes your monitor’s refresh rate with your graphics card, reducing screen tearing and stuttering. Say goodbye to disruptions and hello to seamless gaming performance. The sleek design of the monitor adds a touch of sophistication to your gaming setup. Its thin bezels create an expansive view, making you feel completely immersed in the action on-screen. Connectivity is a breeze with multiple ports, including HDMI and DisplayPort. Easily hook up your gaming console, PC, or other devices for a hassle-free gaming setup. In summary, the AOC 24G4 24″ 180Hz Gaming Monitor is a game-changer for avid gamers. With its high refresh rate, vivid display, and advanced features, it delivers an immersive gaming experience like no other. Upgrade your setup and take your gaming to the next level today! Specifications: Display : 23.8″ Fast IPS Resolution : 1920 × 1080 (FHD) Refresh Rate : 180Hz Response Time : 1ms
The MSI MAG 275CQF E18 is a 27-inch curved gaming monitor built for immersive and smooth gameplay with WQHD resolution (2560 × 1440). It delivers vibrant visuals and responsive performance for gamers seeking clarity and speed. Furthermore, its rapid panel enhances action scenes and detailed environments effectively. It features a 180 Hz refresh rate and a 0.5 ms (GtG) response time, which help reduce motion blur and improve tracking in fast‑paced games. In addition, Adaptive‑Sync support minimizes screen tearing for fluid gameplay. The Rapid VA panel produces rich colors and deep contrast. Moreover, HDR Ready technology enhances contrast and shadow detail for more realistic visuals. Anti‑Flicker and Less Blue Light technologies improve viewing comfort during long sessions. As a result, players stay focused and comfortable. The monitor also supports AI Vision, which boosts brightness and color saturation in darker scenes. In addition, HDMI™ CEC console mode improves compatibility with game consoles. Consequently, MAG 275CQF E18 provides enjoyable gaming whether on PC or console. This monitor combines high refresh performance, curved immersion, and advanced color features to enhance both competitive and casual gaming experiences. Specifications: 27-inch WQHD (2560 × 1440) curved Rapid VA panel 180 Hz refresh rate with 0.5 ms (GtG) response time Adaptive‑Sync support for smooth performance HDR Ready with Anti‑Flicker and Less Blue Light technologies AI Vision and HDMI™ CEC console mode compatibility
The Cudy AC1200 dual band WiFi extender boosts and extends your wireless coverage with speeds up to 1200Mbps across 2.4GHz and 5GHz bands. Ideal for eliminating dead zones, it provides stronger and more stable WiFi for streaming, gaming, and online work in every corner of your home or office. The Cudy AC1200 Dual Band WiFi Extender is designed to expand your existing WiFi network and deliver stronger coverage where your router signal is weak. With support for both 2.4GHz and 5GHz frequencies, it provides balanced performance for browsing, streaming, video calls, and gaming. Easy to set up and compatible with most routers, this extender is the perfect solution for improving WiFi connectivity in homes, offices, and multi-room spaces. AC1200 Dual Band Speed: Up to 1200Mbps total for smooth browsing and streaming 2.4GHz + 5GHz Support: Better performance and reduced interference Eliminates WiFi Dead Zones: Extends coverage to hard-to-reach rooms Stable Connection: Ideal for HD streaming, gaming, and online meetings Universal Compatibility: Works with most WiFi routers and access points Easy Setup: Simple installation with WPS / web configuration (model dependent) Compact Plug-In Design: Saves space and fits easily in any outlet Multiple Modes: Extender / Access Point (depending on model) Perfect for homes, offices, cafés, and apartments needing stronger WiFi coverage. Works with most routers and improves signal strength for devices like smartphones, laptops, smart TVs, consoles, and IP cameras.
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
