Wireless Audio Receiver GD-BT104

Direct access audio input Bluetooth 4.1 version + EDR Bluetooth distance: 10 meters 3.5mm stereo audio jack Connection between wireless speakers and 3.5mm headphones 4 hours uninterrupted stereo audio connection 4 hours non-stop talking Internal microphone Mic sensitivity + -42 db Output power 30 mW USE 3 multi-function keys Middle key: Accept call and start-stop Right button: Volume up – next song transition Left key: Volume down – previous song transition