Brand New Wireless Headset Microphone Enjoy the freedom of wireless speaking anywhere with the Wireless Headset Microphone Clip-on Lapel Microphone free your handsJust connect the receiver to any amplifier and you can communicate wirelessly up to 100 ft Perfect wireless microphone for teaching、 meetings、 presentations、 running a show or any where you need a hands free microphoneThis is very light weighted and portable to take it anywhere with you20m-100m operating distance9V DC operating voltage for transmitter、 1.5V DC operating voltage for receiverFrequence :FM 80- 12500 Hz Transmitter operates on 1-9V batteryDimension: 95 x 64 x 28 mm (transmitter) 104.5 x 40 x 14.5 mm (receiver)Note: 1 x AA receiver battery ( NOT included ) Package included 1 x Wireless Transmitter1 x Wireless Receiver1 x Manual1 x Headset w/Microphone1 x Clip-on Lapel Microphone w/3.5mm Jack1 x 9V battery