Key Features of Wireless Microphone For Type C Devices (WM2c): For Android phones, plug, and play Vivo /OPPO phones need to turn on OTG in Settings to use The receiver does not have a charging port Mute function Specifications: Brand: Odio Product name: Wireless microphone Type of microphone: capacitive Directivity: omnidirectional Frequency response: 50HZ-18khz SNR: 64dBm Open barrier-free effective distance: ≈20 meters (65.6 feet) Human body barrier use distance: ≈7 meters (22.9 feet) Charging time: 1.5 hours Duration: about 5.5 hours Charging input: 5V/1A Mute function You don’t have to worry about being tied down by cords – this mic is completely wireless. Just plug it into your phone and start singing! And with up to 5 hours of battery life, you can keep the party going all night long.