Bluetooth version: V5.4. Bluetooth /HSP/HFP/AVRCP/A2DP/BLE/ SPP. Rated input: 3W. Microphone sensitivity: 1kHz 0dB=1V/Pa -32±1dB. Frequency range: 20Hz- 20KHz. Impedance: 32Ω. Speaker sensitivity: 122±2.5dB dBSPL @1kHz.
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