Always blue: SBC codec
Always orange: AAC
Always cyan: Aptx
Always white: Aptx LL
Always green: Aptx HD
Always purple: Aptx AD
Warm Tips: When you can not connet, please press the button on your Bluetooth earphones box (may need open the lid first) or headphone to clear pairing history
Note: Blue and red light flashing by turns means the Bluetooth transmitter and receiver enters into pairing status.
If you cannot connect or cannot see blue and red lights flashing by turns, please double click the power button or long press the bigger play/stop button for 8 seconds to clear pairing history - white light means history clearing finished,then wait 3 seconds for blue and red light flashing.