Subwoofer Bluetooth headset

(1). LED indicates status • Pairing status: red and blue lights flash alternately • Pairing is successful: all indicators are off • Team status: blue light flashes slowly (2). Key function operation • Power on: Long press the multi-function button for about 3 seconds to power on • Power off: Long press the multi-function button for about 3 seconds to power off • Answering/hanging up: short press the multi-function button to answer and hang up the incoming call • Incoming call rejection: when a call comes in, quickly double-touch the multi-function button to release it to reject the call Short press on the side button is for volume increase and decrease, long press for song selection function. Charging input voltage range: 4.8-5.2V Battery charging saturation voltage: 4.2V Battery charging saturation time: about 2 hours Low battery warning voltage: 3.3V Low power shutdown voltage: 3.1V Shutdown quiescent current: 5.3uA Connected standb