General Specifications :<br>Dynamic frequency response range10-22kHz<br>Driver sensitivity96dB/1kHz, 1mW<br>Maximum SPL103dB<br>Rated power input5mW<br>Microphone sensitivity–42dBV/Pa<br>Battery typePolymer Li-ion Battery (3.7V, 50mAh x 2)<br>Music play time with BT onup to 8 hours<br>* Produk OEM