Bluetooth 5.3 (LMP12.5X) intelligent chip transmission rate is , more stable, and compatibility better supports dual mode /LE stereo audio transmission. In the case of -free, 20 long -distance transmission signal is strong. Support low intelligence, fast connection, reduce the power loss of Bluetooth equipment 24-bitcrc verification to resist interference interference adaptive frequency reduction reduction, so the signal is more stable. Connect the Bluetooth sound/headset to rid of wired restraint, listen to more free, and enjoy the CD -level high -definition sound . Drives are plug and play. Product name: USB Bluetooth adapter Bluetooth version: 5.3 Main -control chip: ATS2851 Transmission distance: 20 (under the environment of no obstacle) Support protocol: A2DP, , AVRCP, , etc. Colour:blue Material:ABS Package Contents: 1 x Adapter Only the above package content, other 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.