Turn ON: Press on 3 seconds of transmitter,indictor light is keep green,pair successfully. Turn OFF: Press on 3 seconds of transmitter,all light off.Transmitter is turn off. Search Pair: Red and green lights flickered alternately. Mute Mode: Double-click the transmitter button to switch to mute state, The green light slowly flash on mute mode /The green light keeps on to restore unmute mode. Reverberation Function: Three-click the transmitter power button to turn on the reverberation, and the green light flashes/Three clicks to turn off the reverb, the green light is on. Low Power of Transmitter: The red light flashed every 10 seconds in the open state. Charging: The red light is keep on during charging,when the transmitter charge full, the red light goes off. Automatic shut-down There is no connection for more than 3 minutes, microphone automatically shut down, and the lights is off. Receiver Paired:The red light is keep on,the paired is successfully. Come with long-lasting Charging CaseThe storage case is also where the microphone is charged. After the storage box is fully charged, the microphone can be fully charged up to 4-5 times, and the microphone and receiver can continue to work for about 6-7 hours per charge. Easy to store, lightweight and portable, weight only 126g.Wide Compatibility&Various UsageThe wireless lavalier microphone can work for android phone with USB-C port and has a lighting adapter,it can also work with for iphone a/6 plus above. The wireless microphone can work for Youtube, Facebook, Live Stream, Video Recording, Vlog, TikTok, Zoom. Note: Some android phone need open OTG(you can search phone setting-system).