<b>Portable UHF Wireless Microphone-- HiFi Original Sound Amplification!</b><br>2. 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: 3.4x1.4x4.2inch<br> Unit Weight: 163g<br> Musical use time: 8--10 hours<br> Voice Amplifier use time: 12-15 hours<br> Charging time: 3-5 hours<br><br> <b>Package:</b><br> 1 X S615 wireless voice amplifier<br> 1 X Adjustable waistband<br> 1 X Wired microphone <br>1 X Wireless microphone<br>1 X USB charging cable<br> 1 X US plug wall charger<br>1 X Manual<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 the signal button 3S on the microphone and it will pair successfully. (Generally, it will automatically hook up the next time you use it.)