Colour:black Material:abs How To Use It? Power On/Off Long press the for 2 sec to power on, the Red/Blue Indicator will sec. Long press the for 5 sec to power on, the Red Indicator will sec. Bluetooth Pairing After powered on, it goes to Bluetooth Pairing mode autaomatically, then place your Bluetooth headphoens or earphones within 1 meter to pair. Bluetooth Disconnection After Bluetooth Paired, long press the for 2 second to disconnect the current Bluetooth Headphones or earphones to enter Bluetooth Pairing Mode. Play Pause Short Press the to pause, press again to play. Clear Bluetooth History After Powered off, long press the about 8 sec to clear Bluetooth paired history, Red/Blue Indicator sec to enter Bluetooth Pairing Mode. Package Contents: 1 x audio conversion adapter 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.