• 2.4G Wireless Connection: 2.4G wireless transmission protocol, adaptive frequency hopping, strong anti-interference, stable signal, long transmission distance
• Easy to Use: Just plug and play, automatic pairing, no need to download any APP, extremely low latency (delay<20ms), making the audio and video synchronized
• Low Power Consumption: Transmitter <15mA, receiver <30mA
• Support Recording When Charging: Support slow charging or fast charging of mobile phones
• Clear Microphone: Built-in 360-degree omnidirectional high-definition high-sensitivity microphone, capture clear sound 
• Battery Capacity: Charging bin is 200mAh, microphone is 40mAh (1pc). Open the charging bin lid to power on immediately, put it in the charging bin and close the lid to power off
• Wide Compatibility: Compatible with Type-C mobile phones and other Type-C devices (Not applicable for Samsung partial model and not for Xiaomi Redmi partial models)

Specification:

• Frequency response: 20HZ-20KHZ
• Sensitivity: -38dB
• Signal-to-noise ratio: 65dB
• Wireless transmission distance: 20 meters

Note: This is not earphones. It's only microphones wearing on the ears.