One To Two Outdoor Recording Lavalier Microphone Noise Canceling Wireless Mic For Live Streaming 1. Realize long-distance high-definition radio for live webcasting, video vlog shooting, interviews, audio, video teaching and other occasions use 2. Three-level noise reduction, reverb, monitoring, playback, mute, can be live while charging the phone 3. 2.4G wireless coupling, boot automatically connected, easy to operate, support for a tow two people to use 4. Can be used for cell phones, computers and other devices without APP 5. Comes with a charging compartment, can be charged to the microphone, convenient storage, portable outings 6. Built-in intelligent active noise reduction chip, strong anti-interference ability, effective recognition of the original sound, in a noisy environment can still be clear recording 7. Compatible with mainstream devices on the market, support most models of cell phonescomputerscamerassound cardscamcorders on the market 8. Dual-diaphragm 360-degree surround sound pickup with high sensitivity microphone, receiving no dead angle Parameters: 1. Microphone: digital silicon mark 2. Input voltage: 5V 3. Battery capacity: 60mAh 4. Charging compartment battery; 600mAh 5. Continuity: 4-6 hours 6. Signal-to-noise ratio: 64DBM Adaptive noise reduction 7. Transmission delay: 30MS 8. Sensitivity: -42DB 9. Frequency Range: 20Hz-20KHz 10. Transmission distance: 20 meters without obstacles 11. Size (including color box): 12.1 x 8.1 x 3.1cm 12. Weight: 76g