FeaturesPortable and light weight fashion design， very easy to store in your bagErgonomic earbud design， comfortable to wearCVC6.0 intelligent noise reductionSweatproof design， best choice when you do sportsWith CSR4.1 APT-X audio decode technology， offering you perfect soundIt can connect with two bluetooth devices at the same timeVoice command for picking up / rejecting callsBuilt-in 80mAh battery， increasing your using timeControl music and calls from the headphoneAllow you answer the phone anytime and anywhereSuitable for all Bluetooth enabled devicesCalls hands-free， drive travel more at easeBuilt in high performance lithium polymer battery Bluetooth Version: V4.1+EDRChip: CRS8645Operating Range: 10mBluetooth Profiles: A2DP， AVRCP， HSP， HFP，APTXNoise reduction: CVC6.0Cable Length: 60cmBattery: 80mAhCharging Time: about 2 hoursTalking Time: 7 hoursStandby time: 200 hours