Audibax Missouri Free Head Dual UHF Headband Microphone System with Rechargeable ReceiverThe Audibax Missouri Free Head Dual is a dual-head microphone system designed with advanced digital radio transmission technology. Signal transmission is significantly improved by digitizing the RF signal and digital transmission of the audio signal, which provides high stability by minimizing signal loss and clear, interference-free sound. Features a range of 30m to 50m so you can move freely during performances. It is perfect and very versatile as it can be used in many applications, both for indoor and outdoor activities, such as educational rooms, conference rooms, karaoke, weddings, stage performances, etc., and offers a great advantage over other wireless microphones as it does not require a power outlet. The receiver is powered by a lithium battery, which can be charged via an included USB cable and each of the receiver's hip flask requires two AA batteries. With cable for power supply via a power bank. If you have a portable speaker with battery and are looking for a dual wireless microphone without losing the benefit of mobility, this is the accessory you need. Using is really easy, connect the receiver to your equipment via the 6.35mm jack plug and then turn on the microphone and connect the transmitter to the receiver and get started right away. Technical Specifications Audibax Missouri Free Head Dual: wireless dual dynamic microphone system consisting of 2 x tiara microphones