Note: Remote control can't turn on the device, only can turn off and other function!!! Support Devices: All kinds of speakers, desktop computer, laptop, TV, power amplifier, projector Product Name: multi function Bluetooth adapter Product version: Remote Control Bluetooth Version: Bluetooth V5.3 Battery: No Battery Transmission Range: 30m (barrier free) Interface: 3.5mm AUX/optical/coaxical Input Parameter: DC 5V-1A(MAX) Support Protocol: A2DP/AVRCP Using Method: Drive free Basic Functions: Bluetooth reception, Bluetooth launch, U-disk playback, tfcard playback, infrared remote control, key operation Material: Aluminum alloy colour: grey Package Contents: 1 x Bluetooth Receiver Transmitter 1 x AV Cable 1 x Audio Cable 1 x Fiber Cable 1 x Remote Control Only 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.