【Long Battery Life】Built-in 80mAh battery provides long working hours. 【Clear Sound in Noisy Settings】Intelligent noise reduction and anti-interference chip ensure clear audio even in loud environments. 【Stable Wireless Connection】Up to 20 meters of barrier-free transmission for flexible and smooth recording. 【Perfect for Content Creators】Ideal for live streaming, vlogging, and short videos—compact and easy to clip on. 【Plug and Play】No complicated setup required, easy to carry and use. Specifications: Frequency range: 2.4GHz Transmitter working current: 11~12mA Start-up current: 10~11mA Working current of receiving end: 20~21mA Power-on current at the receiving end: 8~9mA Shutdown current: 2~3uA Working temperature: -10~45℃ Charging input voltage: DC4.8~5.4v Working time: about 6H Charging interface: TYPE-C Charging time: about 90min Charging current: about 60mA Battery capacity: battery 80mAh Full battery voltage: 4.1~4.25V Transmission distance: barrier-free distance 20m/ human obstacle distance 7m Left and right SNR: 64 dBm Transmission delay: 30MS Sensitivity (microphone): -42dB Type of microphone: MEMS microphone