1Storm Motorcycle Modular Full Face Flip up Dual Visor Helmet + Spoiler + Motorcycle Bluetooth Headset: HJK316

Features DOT Approved; Helmet comes with spoiler and motorcycle bluetooth headset as bundle (installation required); Advanced Modular/Flip up and Dual Lens Design (inner smoked lens/outer clear shield); Motorcycle Bluetooth Headset supports up to 3 riders intercom, 800 meter communication, 10 hr phone talk time, 7 hr intercom talk and 300 hr standby time; Compatible with most mobile phone, Ipad, GPS audio via Bluetooth 3.0 technology; Easy one touch phone call, music playing, FM radio control; Aerodyname Spoiler mounting helps helmet steady and stylish looking;   Technical Details Brand: 1Storm Model: HJK316 Shipping Weight: 5 pounds Manufacturer Part Number: HB89 CAPA Certified: DOT Certified   Helmet Size Tips (1)Wrap a measuring tape around your head about a half-inch above eyebrows (2)Take measurement two to three times to pick the largest one.