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. 2. Handheld Microphone: The microphone can also be used as a handheld microphone, allows you to move around more freely and show highlights or important facts, very suitable for fitness coaches, teachers and dance coaches. 3. Easy to Use: Please turn on the 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. 4. Wide Compatibility: The UHF wireless microphone can be used with voice amplifier/high- speaker/portable pa system/mixer/ speaker system. We also provide adapters from 35mm to 635mm to help you make more choices. 5. Rechargeable Wireless Microphone: The -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 charged. You don't have to change the battery regularly. Specification: Sensitivity: 39dB +/- 1dB Audio response: UHF720-820MHZ Frequency response: 0HZ-23000HZ Charging voltage: DC5V300MA Charging time: 2-3 hours (recommended) Microphone: single-point capacitive Distortion: 05@0HZ Sensitivity: 39dB +/- 1dB Effective distance: 50m Use time: according to the actual situation Suitable for: voice amplifier/high- speaker/portable pa system/mixer/ speaker system, etc. Colour: black Material: plastic Package Contents: 1 x 2 in 1 Handheld UHF Wireless Microphone set Only the above package content, other products are not included. 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.