Composition: ABS Silicon Mic Type: Digital silicon microphone with a 32 kHz sampling rate and a 12.4 GHz transmission frequency Regularity Response Range: 20 Hz–20 KHz + 25 ms of transmission time Battery for the charging bin: 450mAh Receiver: Lightning/TYPE-C Features of the product 1. Integrated charging compartment, convenient storage, automatic connection, no pairing required, open the cap to turn on 2. Plug and play, no APP, one key for muting, one key for noise reduction; 3. Provide stable transmission for numerous users utilizing the 4G private protocol simultaneously. 4. AI-powered intelligent noise reduction that enables live streaming and recording while charging 5. 360° HD audio and a wireless connection that is barrier-free for 30 meters 6. Exceptionally low latency, synchronization of sound and images, appropriate for a variety of applications, including live broadcasting, recording, online education, store visits, interviews, and more. 7. 99% of mobile phone models are compatible,