1. Does not support mobile phones/for /laptops-the latest upgraded wireless microphone headset system: using advanced UHF wireless transmission technology. Provide a stable wireless connection of 160 feet (50M) in open areas. Suitable for teaching, stage performances, conferences, etc._x000D_ 2. Handheld Microphone: The microphone can also be used as a handheld microphone, allows you to move around more freely and show or important , very suitable for fitness coaches, teachers and dance coaches._x000D_ 3. Easy to Use: Please turn on the power switch of the transmitter and receiver, the blue light will flash for about 2 seconds, the indicator light will stop flashing after the match is successful, and then you can use it without any other operations._x000D_ 4. Wide Compatibility: The UHF wireless microphone can be used with /high-power speaker/portable pa system/mixer/ speaker system. We also provide adapters from 3.5mm to 6.35mm to help you make more choices._x000D_ 5. Rechargeable Wireless Microphone: The micro-USB cable can charge the wireless transmitter and receiver at the same time, it takes about 2-3 hours, and the working time is about 6 hours after fully . You don't have to change the battery regularly. Specification:_x000D_ Sensitivity: 39dB +/- 1dB_x000D_ Audio response: UHF720-820MHZ_x000D_ Frequency response: 0HZ-23000HZ_x000D_ Charging voltage: DC5V300MA_x000D_ Charging time: 2-3 hours (recommended)_x000D_ Microphone: single-point capacitive_x000D_ Distortion: 0.5@0HZ_x000D_ Sensitivity: 39dB +/- 1dB_x000D_ Effective distance: 50m_x000D_ Use time: according to the actual situation_x000D_ Suitable for: /high-power speaker/portable pa system/mixer/ speaker system, etc._x000D_ Colour: black_x000D_ Material: plastic Package Contents:_x000D_ 1 x 2 in 1 Handheld UHF Wireless Microphone set Only the above package content, other products are not included._x000D_ Note: Light 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. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_