<b>Portable UHF Wireless Microphone-- HiFi Original Sound Amplification!</b><br> 1,High power ultra light magnetic inner trumpet, low weight, voice is strong and clear, also very wide coverage.<br> 2.Rechargeable voice amplifier: Very long operating time --- up to 15 hours clear & loud amplification with a single fully charged.<br> 3.SOUND COVERS 5,300+ SQ FT – powerful waistband voice amplifier delivers amazing sound & excellent clarity; amplifies your voice across larger Auditoriums.<br> 4.UHF Wireless amplifier, with 40m/130ft wireless transmission technology, no need to carry the device any more, completely hands-free, more convenient and comfortable.<br> 5.Widely used: teaching, tour guide, sales promotion, yoga, lectures, meetings, karaoke, fans singing, morning exercise, dance, training and so on purpose<br><br> <b>Features:</b><br> Output power: 10w<br> Frequency response: 90Hz-18KHz<br> Charging Voltage: DC 5v, 500ma<br> Material: ABS<br> Battery: 1800mA<br> Product Size: 106 mm * 86 mm * 42 mm3.4x1.1x4.2in<br> Unit Weight: 163g<br> Musical use time: 8--10 hours<br> Amplification of using time: 12-15 hours<br> Charging time: 3hours<br><br> <b>Package:</b><br> 1 X S615 wireless voice amplifier<br> 1 X Adjustable waistband<br> 1 X Wireless microphone<br> 1 X USB charging cable<br> 1 X US plug wall charger<br><br> <b>Note:</b><br> 1.The microphone can not be close to other microphones or speakers as this will produce coupling and generate a reverberation that never ends when a microphone is near a loudspeaker will catch the sound of it and emit a shrill voice and create a loop up Cut off the current or move away from each other.<br> 2.Turn on the mini amplifiers and then press "M" Button until you see the blink blue light and then let go;Turn on the wireless microphone and then press "+" button on the microphone around 3S and it will pair successfully. (Generally, it will automatically hook up the next time you use it. Turn on & Use).<br>