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