Main Features:Bluetooth V3.0 wireless mono earphone with earhookConnecting device wireless with BluetoothCompatible with phones supporting bluetooth wireless technologyInnovative technology with ergonomic designExcellent sound quality and super clear soundSuper-lightweight makes you forget even you are wearingCompatible with almost of Bluetooth mobile phonesAnswer/end/reject a call Specifications:Support profiles: Headset， handfree， A2DPTalk time: Up to 3 hoursStandby time: Up to 100 hoursPower source: Built in rechargeable li-ion batteryBluetooth Specification: Bluetooth V3.0Effective Distance: 5 MComes with a USB charging cableSize: 32 x 26 x 22 mmColor: Black / White Package Includes:1 x Bluetooth Earphone1 x USB Charging Cable1 x Earhook1 x User manual