Bluetooth Version: CSR4.1Channel system: stereo (dual channel)Battery Capacity: 130mAhDrive Unit: 10mmWeight: 24.1gCharging time: 2 hoursCall duration: 10 hoursMusic Duration: 8 hoursContract Support: HSP / HFP / A2DP / AVRCP / APT-X / CVCinput loading pattern: DC 5VBluetooth working frequency: 2.400GH-z-z-2.480GHBest distance conversation: <1 millionMaximum Transmission Distance: 10Mmultipoint connection: SupportWearing method: type rear suspensionAttached Accessories: USB charging cable, manual, size caps"1. Headset sports Bluetooth wireless rear-mounted2. 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 function6. Large battery capacity, low power consumption and long battery life7. Support the power display of the IOS system8. Intelligent Noise Reduction high version CVC6.0NFC support function "