K1 Wireless Clip Microphone 2.4G Wireless Lapel Mic for Mobile Phone Live Stream/Interview/Short Video (Type-C Charging Version) Built-in 80mAh battery,10 hours long battery life to satisfy your daily needs Suitable for short video,live streaming,all kinds of noisy environments can also be used,don't worry about your working 20m barrier-free connection made recording more flexible. High-performance wireless microphone with stable signal Built-in decoding chip,intelligent noise reduction,strong anti-interference ability,effectively recognize the original sound,and can still record clearly in a noisy place If making Vlog is one of your hobbys,and then this mini microphone is a best choice for you 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 Package included: 1 x Microphone 1 x Receiver 1 x English and Chinese Manual 1 x Data Cable Other items not included