Features: Bluetooth-compatible 5.1 receiver: equipped with Bluetooth-compatible 5.1 chip, the transmission speed is increased by 2 times, the connection stability is for stronger, and the signal range is wider by 10M/32.8ft. Bluetooth-compatible: This audio adapter supports 3.5mm aux audio and is for all for smart phones and Bluetooth-compatible audio devices ( headsets, speakers, etc.). Specifications: Interface: USB Wireless Type: Bluetooth-compatible Content: Audio&Video Sound Track: 5.1 Bluetooth-compatible profile: 5.1 EDR, A2DP, HSP, AVRCP Frequency: 2.4GHz-2.48GHz Bluetooth-compatible Transmission Distance: less than equal 10m/32.8ft Bluetooth-compatible Receiving Distance: less than equal 10m/32.8ft Power supply voltage: for DC 5V Material:ABS Colour:Black Note: Only the above package content, other products are not included. 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 is1-2cm. Package includes: 1 x Wireless Audio Receiver 1 x 3.5mm Aux Audio Cable 1 x User Manual