Size: M(57-58cm) L(59-60cm) XL(61-62cm) XXL(63-64cm). Both men and women can be used universally.
Function: Stereo sound quality, automatic answering calls, listening to songs, and own FM radio. It is a pleasure to drive while wearing a multi-function Bluetooth helmet to listen to music. You can also automatically answer calls and bring security to your ride.
HIDDEN MICROPHONE: The traditional mobile phone mic has a lot of noise when riding, in order to solve this problem, the rodless mic design is used, no harness is troubled!
Battery: 550 mAh battery, you can continue to listen to songs for 12 hours. There are double lenses and fog is not affected.
Main unit: Waterproof, it does not affect the use in rainy days. It is completely detachable lining, easy to clean and comfortable.
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