Driver-free Plug and play for Win8.1/10/11 driver-free, just plug it in and it works Supports for Win7 (driver needs to be installed) Enjoy wireless excitement, the driver can be downloaded and installed through the connection Low latency, no lag Synchronized audio and video for watching TV series True 5.4 Bluetooth chip, anti-interference + long-distance dual upgrade High-fidelity lossless transmission: Enjoy CD-level stereo, delicate, quality True BT5.4 Bluetooth chip Supports +BLE High-performance Bluetooth 5.4 chip, supports Bluetooth dual mode, 3Mbps high bandwidth Higher transmission rate: achieve higher sensitivity, lower latency, more stable connection 7 devices Connect simultaneously Connect multiple devices simultaneously, saving USB space Colour: A: Material:Plastic+Metal Package Contents: 1x Bluetooth adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.