1. Frequency range: 2.4GHZ 2. Radio distance: about 20 meters 3. Frequency response range: 20-20KHZ 4. Charging time: about 100min 5. Signal-to-noise ratio: 79db 6. Interface: 8Pin/Type-C 7. Output power: 5W 8. Microphone: Electronic silicon microphone 9. Battery capacity: microphone 100mAh, charging compartment 450mAh 10. Function: DSP noise reduction, two-way monitoring function, reverberation, sound card function 11. Size: microphone about 5.5x1.5 cm 12. Weight: about 2.4 grams of microphone Features: 1. Smart charging compartment, wireless charging anytime, anywhere, convenient and fast 2. Double mark noise reduction + three gears adjustable 3. 360-degree high-definition surround radio 4. Support computer/mobile phone/TV/camera/audio 5. Dual-chip active noise reduction, which can shield ambient noise when turned on 6. Small and easy to hide, you can clip the neckline, cuffs, etc., live video recording is convenient to carry 7. 2.4G wireless, 1 second automatic connection, strong signal, unimpeded synchronous transmission 8. Independent buttons on the side, 1s connection after booting, no need for cumbersome configuration 9. Convenient and stable collar clip, stable without falling 10. Metal anti-splash net, anti-spitting, anti-breaking sound, clearer radio 11. High-density spray-proof sponge, high-sensitivity microphone, quick response 12. Real-time ear-back monitoring