Are you tired of holding the microphone when you are doing video recording or outdoor interview? Now you can have the headset wireless microphone to set your hands free! Features: UHF wireless transmission technology can provide stable signal and distance to 165 feet (50M). It can deliver loud and clear sound without cross interference. Receiver and transmitter are easy to pair, turn on both transmitting and receiving switchesand then they will be connected automatically. The plug on the receiver is 3.5mm, also include another converter for 6.35mm. You can use the additional 6.35mm adapter to connect more equipment. Dual micro USB cable can charge both the wireless transmitter & receiver in the meantime, built-in 400 mAh batteries that can offer about 4 hours working time, fully charge is only 2 hours. Makes you more freedom to move around without holding the microphone, perfect for Broadcasters, TV Presenters, Fitness Instructor, Teacher, Dancing instructor, Singers, etc. Specifications: Transmitter Working Current: 103MA 15MA Transmitted Power: 10DBM Transmitter Standby Current: 45UA Receiver Working Current: 89MA 5MA Receiver Standby Current: 30UA Receiver Response: 80Hz - 10KHz Transmitter/ Receiver Battery: 3.7V/ 400mAh Transmitter/ Receiver Charging Voltage: 5V 0.25V Transmitter/ Receiver Frequency: 600MHZ - 690MHZ Transmitter/ Receiver Working Time: 4H Package List 1 * Transmitter 1 * Receiver 1 * 6.35 mm Converter 1 * Double Head USB Charging Cable 1 * User Manual