Wireless Microphone Headset System: Adopt advanced 2.4G wireless transmission technology. 160-210 ft (60M) stable wireless connection at open areas. Suitable for teaching, stage performers, Meeting etc wireless mic,make you more freedom to move around and demonstrate or important , perfect for Fitness Instructor,Teacher, dancing instructor. Easy to use--Please turn on the transmitter and receiver power switches, the blue light flash for approximately 2s, indicator light stops flashing after a successful match, and then you can use it,no further action. Wide Compatibility-- wireless microphone can be used with voice amplifier/large power speakers/portable pa system/mixer microphone speaker system. Rechargeable Wireless Microphone--The cable can charge both the wireless transmitter & receiver at the meantime Color: Black Material: plastic Package Contents: 1 x transmitter 1 x head-mounted bracket 1 x receiver 1 x charging cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.