Specification:

Frequency response: 20HZ-20KHZ Sensitivity: -49dB Signal-to-noise ratio: 52dB Transmission distance: barrier-free 20 meters
Transmission frequency: 2402-2480MHZ Microphone battery capacity: 80 mAh
Amplifier battery: 2000 mAh Color : black, white, red

Features :

Can be used as a Bluetooth speaker Support battery display Support USB disk audio input (only supports MP3, WAV format)

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