Bluetooth Connectivity NameMeizu POP 2. BluetoothV 5.0. Battery TypeLi-Po. Frequency Response Range20Hz – 20KHz. Impedence16 Ω Mic Sensitivity-38dB @ 1Khz. Weight5.4g. Distance10 M. Battery Capacity55mAh*2 / 350mAh. Max Power5 mW. Speaker Sensitivity101dB @ 1Khz. Power ConnectorUSB Type-C....