Features: Wireless handheld uni-directional microphone to effectively give high quality sound without any hum or crackle noise. High sensitivity and 60Hz~13KHz frequency response, VHF receiver. Working distance up to 30 to 50 meters at open area without obstruction. The receiver with 6.35mm plug for connecting audio devices. Powered by 3 * AA batteries, 2 for the microphone and 1 for the receiver. Plastic body with comfortable and smooth touching feeling. Great for show, karaoke, video chat, ceremony, outdoor wedding, market promotion, classroom, exhibition and other places of propaganda.