Martian Motorcycle Bluetooth Modular Full Face Helmet: HM-BH1; HM-BH2 Size:M(55-56 CM 21.7/22.0 Inch ) Chest: S (29-31 inch)

Chest: S (29-31 inch)

</li><li>XL   Waist 15 inch

M (31-33 inch)

Model: HKY_SC09S

Intelligent noise reduction & Strong Compatibility

Martian Motorcycle Bluetooth Modular Full Face Helmet: HM-BH1; HM-BH2 Size:M(55-56 CM 21.7/22.0 Inch ) Chest: S (29-31 inch)Features Advanced Modular Flip up and Dual Lens Design (inner smoked lens outer clear shield); Two Way: Motorcycle Bluetooth Headset supports up to 3 riders intercom, 500 meter communication, 12 hr phone talk time, 9 hr intercom talk, 3 hr charging time and 120 hr standby time; Six Way: Motorcycle Bluetooth Headset supports up to 6 riders intercom, 1000 meter communication, 12 hr phone talk time, 9 hr intercom talk, 3 hr charging time and 300 hr