Bluetooth version: V4.1 + EDRSupported profiles: A2DP， AVRCP， HSP， HFP SPPDriver unit: ©ß10mmSpeaker impedance: 16©ÓSensitivity: 110dBOperating distance: 10mFrequency response: 20Hz-20KHzTHD: <0.1% (THD)Music time: up to 4 ~ 5 hrsCharging voltage: 5vStandby time: up to 120hrsFully Charged time: about1-2hrsCharging socket: Micro-USBPackaging: headset + charging cable + manual + upper ear ear cap + + sub-headphone