Portable Audio Transmitter Driver-Free Wirele Transmitter Mini for Home Computer Desktop for Portable Audio Video Transmiion Feature:1. Multiple Bluetooth-Compatible:This wirele adapter can be compatible with 5.2, 5.1, 5.0, 4.0/3.0, 2.0 and other Bluetooth-Compatible versions. Profeional design makes this wirele receiver work very efficiently.2. High Performance Chip:This USB wirele adapter uses high performance chip. It has low power consumption and low latency. At the same time, can transmit high-definition sound quality, in the transmiion is more stable, neither delay and will not be stuck. It can recognize Bluetooth-Compatible devices faster and more accurately, and can support more Bluetooth device connections.3. Support Win8.1/10/11 System:This audio receiver and transmitter is suitable for Win8.1/10/11 system. No driver allows it to realize wirele multimedia data transmiion, and users can share multimedia files more conveniently and quickly, greatly improving work efficiency.4. Wide Compatibility:This Bluetooth-Compatible adapter can support a variety of devices, such as smartphones, computers, watches, tablets and so on. It supports the transmiion of audio, video and data information, and is a good aistant for efficient and convenient use of Bluetooth devices. It can achieve simple and fast wirele connection, easy to use, fast speed, connection range is also very wide.5. Built-in Smart Antenna:This audio and video receiver has a built-in smart antenna, which gives it a longer range and more stable transmiion. Specification:Certification: NONEOrigin: Mainland ChinaInterface: USBWirele Type: Bluetooth-CompatibleWIFI Standard: NoneContent: Audio&VideoHigh Definition Support: 1080PModel Number: USB Bluetooth-Compatible 5.3 AdapterModel Type: BT617Bluetooth-Compatible version: 5.3Transmiion distance: 20mSupported protocols: A2DP, HSP, AVRCP, and HDPackage size: 110 x 90 x 12mm/4.3 x 3.5 x 0.5inProduct size: 27 x 16 x 7mm/1.1 x 0.6 x 0.3inGro weight: 20g Note:Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!Please allow 1-2cm measuring deviation due to manual measurement. 1 x Adapter1 x Instruction Manual