WirelMicrophone Headset System: Adopt advanced 2.4G wireltransmission technology. 160-210 ft (60M) stable wirelconnection at open areas. Suitable for teaching, stage performers, Meeting etcwirelmic,make you more freedom to move around and demonstrate or important , perfect for FitnInstructor,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-- wirelmicrophone can be used with voice amplifier/large power speakers/portable pa system/mixer microphone speaker system.Rechargeable WirelMicrophone--The cable can charge both the wireltransmitter & receiver at the meantimeColor: BlackMaterial: plasticPackage Contents:1 x transmitter1 x head-mounted bracket1 x receiver1 x charging cableOnly 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.