General SpecificationsBluetooth version 4.1Support A2DP V1.2, AVRCP V1.5 HFP V1.5, HSP V1.2Transducer 1 x 40mmOutput power 3.0WFrequency response 180Hz – 20kHzSignal-to-noise ratio ≥80dBBattery type Lithium-ion polymer (3.7V, 730mAh)Battery charge time 2.5 hoursMusic playing time up to 5 hours (vari..