Support: Support ATPX HD 24BIT transmission ,Can connect two Phone at the same timeReceiving distance: Barrier-free straight-line distance 5-10 meters, does not support through the wall.Bluetooth version: Bluetooth 5.0Bluetooth chip: British CSR8675 chipBluetooth support: APTX-HD, APTX-LL, APT-X, A2DP, AVRCP, AAC, etc.Pure digital output, no analog function, no call.Output interface: optical digital output, coaxial digital output, connected amplifier or active speaker.Power supply: Power supply can be used with mobile phone charger or computer USB cable, very convenient.Antenna: External 3DB 2.4G Bluetooth antenna, signal stability.Bluetooth lights: The pairing status is blinking blue and the pairing is blue.Colour:blackMaterial:ABSSize:8.3 x 6.6 x 2.7cmPackage Contents:1 x Bluetooth Wireless ReceiverOnly the above package content, other products are not included.Note: Light shooting 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.