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, projectorProduct Name: multi function Bluetooth adapterProduct version: Remote ControlBluetooth Version: Bluetooth V5.3Battery: No BatteryTransmission Range: 30m (barrier free)Interface: 3.5mm AUX/optical/coaxicalInput Parameter: DC 5V-1A(MAX)Support Protocol: A2DP/AVRCPUsing : Drive freeBasic Functions: Bluetooth reception, Bluetooth launch, U-disk playback, tfcard playback, infrared remote control, key operationMaterial: Aluminum alloycolour: greyPackage Contents: 1 x Bluetooth Receiver Transmitter1 x AV Cable1 x Audio Cable1 x Fiber Cable1 x Remote ControlOnly 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.