Upgrade Bluetooth 5.3: This Bluetooth adapter has a faster data transmission speed and a larger amount of data transmission and reception. In addition, the transmission distance is increased and the to penetrate walls is also enhanced.Backward Compatibility: This Bluetooth adapter can be compatible with Bluetooth 2.0/3.0/4.0/5.0/5.1 devices, with a Bluetooth 5.3 adapter, you can solve all other Bluetooth connection problems.Free Drive, Plug And Play: This Bluetooth 5.3 is driver-free, plug and play. Compatible with Windows 8.1/10/11. It should be that it is not suitable for win7/8, OS, Linux, , TV.Broad Compatibility: The Bluetooth adapter has wide compatibility and it supports simultaneous connection of 5 devices.Transmission Distance: The transmission distance of Bluetooth 5.3 can reach 20 , the delay is reduced, and the transmission is faster and more stable.Material: plasticcolour: as shownPackage Contents:1 x Bluetooth AdapterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.