Avantree Long Range Bluetooth USB Adapter for Headphones, Speakers, Driver-Free Wireless Audio Dongle Transmitter, Plug-n-Play, aptX Low Latency, for PC Mac PS4 Nintendo Switch Linux [24M Warranty] Streaming High Quality Stereo Audio to Bluetooth Speaker, Bluetooth headphones. Support PC, PS4, Nintendo Switch, Apple Macbook, Linux Laptop Computer etc. (NOT FOR DATA TRANSFER, can't work with mouse, keyboard, etc). NO LIP SYNC DELAY  The latest aptX Low Latency technology makes this an ideal device for real time apps such as movies, games (Lowest Latency can be achieved when using with a Low Latency supported Bluetooth device, such as Avantree Audition Pro. PC Independent - Switch from PC to Mac? No need to pair again. Unlike most Bluetooth USB adapters on the market, this device has a external USB Sound card plus independent Bluetooth 4.1 class I audio transmitter. It is easier and portable. LONG RANGE & CD-like QUALITY SOUND: Its working range can up to 20m/60ft without any interference in open air. Connected with Class I Bluetooth headphones/speaker, its no signal lose will assure you a CD-like quality sound. 2 Years Warranty + Free customer telephone support (0800 644 6388). Also many video and FAQ from Avantree site. Notice: For gaming users need to talk and music streaming simutaneously, please consider our coming soon item DG59 - Bluetooth dongle headphone low latency set for better sound quality. For leaf, You need to double click the MFB to switch between MUSIC MODE and CALL MODE. Bluetooth-enable any PC or laptop (Windows, OS, Linux, etc). Bluetooth-enable your game console (PS4, Nintendo Switch, etc). Use with Bluetooth headphones, speakers and receivers to stream music or online chat. Use with aptX-Low Latency (&lt;40ms delay) devices to eliminate lip-sync delay. Range of up to 20m / 60ft in open air without obstacles / interference. Factors in your environment may also impact range - <span class="a-text-bold">please see FAQ - Q1 below.</span> Cannot Bluetooth-enable TVs, wired speakers or car stereo systems. Not work with keyboard / mouse, mobile phone, game controllers, printers, projectors and other BLE (Bluetooth Low Energy) devices. Supports voice OR music single channel only for non-FastStream (FS) BT headphones. <span class="a-text-bold">For simultaneous voice and music while gaming, see details in FAQ - Q2 below.</span> Use with <span class="a-text-bold">non</span> aptX-Low Latency devices (e.g. Bose, Beats, Sony, Airpod headphones) will produce an audio delay of 70-200ms  - not ideal for watching video movies. Bluetooth version: 4.1 Bluetooth profile: A2DP, HFP, HSP, AVRCP Audio codec: aptX-LL, aptX, FastStream, SBC Operating range: Up to 20 meters in open area without any obstruction Product weight: approx. 10g Product size: 66(L) x 18mm(W) x 15mm(H) For simultaneous talk and music while gaming, please ONLY use with FastStream (FS) compatible BT headphones e.g. Avantree ANC031, ANC032, or HS063. Also consider the DG59 transmitter headphone set. For other Bluetooth headphones please use in either talk OR music mode only. Double click the MFB to switch. Otherwise you will get poor quality music when in TALK mode (LED stays WHITE) or the microphone is not clear when in MUSIC mode. Remove the rubber belt  of the dongle OR use an extension USB cable to connect with PS4. Plug the dongle into the Nintendo Dock OR use Type-C to USB female converting cable connect to Nintendo Switch Console. The range depends on<span class="a-text-bold">BOTH the transmitting and receiving</span> device. Please test your receiving Bluetooth device with a mobile phone to confirm the range is acceptable. Operation range can be affected by physical obstructions (walls, people, etc.), wireless interference (Wi-Fi routers, Wireless TV adapters, etc). An <span class="a-text-bold">UNSTABLE</span> Bluetooth connection can cause range and audio issues. Please <span class="a-text-bold">reset / clear</span> the pairing history of <span class="a-text-bold">BOTH DEVICES</span> and re-pair / connect them again. If you&#039;ve plugged the Leaf into a <span class="a-text-bold">USB 3.0 port</span>, please change to another (preferably non 3.0) USB port. The USB 3.0 standard has known interference issues with Bluetooth. Audio issues can be caused by a slow internet connection if you are streaming content (video or music) from an ONLINE source. Please check your internet speed is acceptable. Unstable power output from the USB port can also cause range and audio issues. If you&#039;re using a desktop computer, please try a USB port on the back of the computer using the extension cable. You can also try using a USB hub with a power adapter. The FastStream codec allows both music and talk channels to work simultaneously. The Leaf supports FastStream and if used together with a FastStream compatible headphone will deliver much better stereo sound while in TALK mode. Currently there are only a few headphones on the market that support FastStream (though this number is increasing). If you want to use this featureplease purchase a pair of Avantree FastStream supported Bluetooth headphones, e.g. the Avantree HS063, ANC032, ANC031, DG59 set, etc.