Specification: Bluetooth:BT 4.0 Working voltage: 3.7V Distortion: 1% Speaker: 32Ω Charging voltage: DC 5V Frequency response: 20Hz-20kHz Signal to noise ratio: 75dB Call duration: 6h Music player: 8h Standby time: ≥ 30 days Charging time: 5h Package included: 1X Bluetooth earphone 1X user manual 1X USB cable 1X audio line
