Equipped with a high-percompatiblemance Bluetooth 5.3 chip, the signal is stable and high-speed transmission, the response is fast, and the delay is rejected.The upgraded version 5.3 Bluetooth adapter has a longer distance coverage and a more stable connection.Bluetooth 5.3 has higher percompatiblemance and supports data/audio transmission.Barrier-free transmission 100 meters real-time data transmission, convenient and fast.Driver-free, plug and play.Product name: USB bluetooth adapterModel: BT608Bluetooth version: 5.3Transmission distance: 100 meters (under barrier-free environment)Support protocols: A2DP, , AVRCP, HID, etc.Material: ABScolour: BlackPackage Contents:1 x Bluetooth Adapter1 x AntennaOnly 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.