Wireless Lavalier Microphone Set, 1 TX + 2 RX, USB-C Charging Case

1 - Input voltage: 5V.
2 - Microphone battery capacity: 80mAh.
3 - Charging case battery capacity: 800mAh.
4 - Operating time: up to 6 hours.
5 - Signal-to-noise ratio: 64dB.
6 - Sensitivity: −42dB.
7 - Frequency response: 20Hz–20kHz.
8 - Wireless transmission distance: 20–30m.
9 - Supports digital and analog audio output and can be used with mobile phones.
10 - Supports noise reduction, reverberation, two-way monitoring, audio input and mute.
11 - Wireless pairing and automatic connection when powered on; supports two-person recording.
12 - Compatible with mobile phones, computers, tablets, speakers, amplifiers, cameras and other devices