Digitek DWM 005 Wireless Microphone Aux Connector Noise Cancellation Mic Receiver Indicator :Insert the receiver to mobile phone, the red and blue lights will flash alternately, indicating receiver and transmitter are pairing. The red light is always on indicating the transmitter and receiver are paired and working. Button Long press to turn On/Off the microphone (red and blue Short press to mute/unmute themicrophone. Red and blue lights flash alternately, the red lightis always on after paired flash alternately when mute. Built-in-50mAh Li-poly battery for to 4 Hours operation. Charging via USB(AC adapter or Power Bank-not included) Transmitter Indicator Power on: Red and blue lights flash. Charging the red lig h alternately,indicating transmitter and receiver are pairing . Working Status: the red light is always on, indicating the transmitter and the receiver are paired and working ht is on, while off when it is full Type-C Charger : DC / 5V power input Port type: Type-C