TELESIN Wireless Lavalier Microphone Noise-Canceling Magnetic Button Microphone 1. Long-lasting battery life, with a single microphone providing 6 hours of usage, and the battery compartment can extend the battery life by 12 hours. It can be fully charged and revived in 1.5 hours 2. Wide compatibility, plug-and-play, supporting most Type-C interface devices on the market, including mobile phones, laptops, tablets, etc 3. 200-meter sound distance, clear and stable. Built-in laser-engraved antenna, ensuring stable transmission even at long distances 4. Sampling rate up to 48KHz 24bit, restoring lossless audio quality 5. 70dB signal-to-noise ratio, enhancing sound purity and suppressing noise interference 6. 110dB sound pressure level, with greater tolerance and not afraid of loud noises Parameters 1. Sampling rate: 48KHz 24bit 2. Frequency response: 20Hz - 20KHz 3. Channel mode: stereo 4. Transmission distance: 200 meters in line of sight 5. Transmission method: bluetooth 6. Noise reduction method: one-click noise reduction 7. Sound delay: less than or equal to 24ms 8. Signal-to-noise ratio: 270dB 9. MIC sensitivity: -36 +- 2dB 10. MIC directivity: omnidirectional 11. MIC sound pressure level: greater than or equal to 110dBSPL 12. Microphone battery: 65mAh 13. Charging compartment battery: 300mAh 14. Charging duration: microphone about 1.5 hours, charging case about 1.5 hours 15. Input current: microphone: 5V1A; charging compartment: 5V 1A 16. Size: receiver: about 3.395 x 2.54 x 0.92 cm; microphone: about 2.57 x 2.5 x 1.26 cm; charging case: about 7.5 x 4.2 x 3.56 cm 17. Weight: receiver:about 4.82g; microphone: about 8.85g; charging case: about 43.12g Packaging list: - charging dock x 1 - receiver x 1 - microphone x 2 - magnetic clasp x 2 - magnetic clip x 2 - data cable x 1 - windproof cover x 2 - storage bag x 1