Bluetooth Version: CSR4.1Channel system: stereo (dual channel)Battery Capacity: 60mAhDrive Unit: 10mmWeight: 16.8 gCharging time: 1 hourCall duration: 6 hoursMusic Duration: 4 hoursProduct size: 56 * 12 * 8.5mm (Bluetooth control)Contract Support: HSP / HFP / A2DP / AVRCPinput loading pattern: DC 5V 300MABluetooth working frequency: 2.400GH-z-z-2.480GHBest distance conversation: <1 millionMaximum Transmission Distance: 10Mvoice prompt: supportmultipoint connection: SupportMethod of use: earhookAttached Accessories: USB charging cable, manual, size caps"1. sport Bluetooth headset wirelessly with earhook2. Automatic conversion between phone and music selection up / down, play / pause3. High quality stereo sound, listening to music, shocking bass effect, clear communication4. Support one to two functions, call rejection function5. Support voice prompt function (Chinese / English)6. Large battery capacity, low power consumption and long battery life7. Support the power display of the IOS system8. Intelligent Noise Reduction high version CVC6.0