1. Improved Technology: UHF Wireless Microphone Headset adopts advanced UHF wireless transmission technology, providing loud, clear, and high-fidelity sound quality for your audience, and has 165 feet (50 meters) stable transmission distance in an open area. 2. Versatile Design: Can be used as a handheld microphone or wireless microphone, Teaching Microphone is allowing you to move around more freely and show or important , Suitable for fitness coaches, teachers, and dance instructors, providing loud, clear, and high-fidelity sound quality for your audience. 3. Simple to Use: Wireless Microphone can be easily used, turn on the power switchs of the transmitter and receiver, and the blue light flash for about 2 seconds, the light stop flashing after the matching is successful, and then it can be used without further operation. 4. Designed for Two People Use: Ideal to be used by two people at the same time. So your device only needs to have one mic jack to do the work of two people, Fitness Headset Microphone is making 2 earphones transmit to 1 receiver, you can also just use one mic and use the other as a backup. 5. Extensive Application: UHF Handheld Microphone is light and comfortable, has an exquisite appearance and small size, easy to carry, you can say goodbye to long cables, and get maximum comfort and freedom of movement. Working voltage:DC3.5V-5.5V Maximum current:less than equal 75mA Charging time:about 2h Use time:about 6h Transmission distance:50M Receiving sensitivity:-88dBM Sampling frequency:48KS/s Signal-noise ratio: equal 65db Due to different batches, there may be differences in product appearance and printed text, which not affect use. Colour:Black Material:ABS Package Contents: 1 * Receiver 2 * Transmitter1 * 6.35 to 3.5MM adapter 1 * One to two 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.