Features: 100% Brand New and High Quality! Adjustable top and chin ventilation for rider comfort. Quick release shield mechanism with scratch resistant shield. Aerodynamic and rugged thermoplastic outer shell design with built-in spoiler. Features built-in Bluetooth, water resistant controls. Listen to music streaming via your compatible cell phone, as well as other bluetooth compatible devices. Rider to rider/passenger intercom with additional compatible helmets. Compatible with many GPS units (audio prompts). Uses replaceable Bluetooth lithium-ion battery and charger included. Removable/washable comfort liner. Full face design Improve your look and style Perfect for sport, cruiser, racing & street bikes Available in all seasons, variable full face helmet and half helmet, anti-fog and warm. Specification: Item Type:Helmets Material:ABS Weight:1500g+/-50g Gender:Unisex Helmet Style:Flip Up Helmet Quality Certificate:Dot Size:M(57-58CM),L(59-60CM),XL(61-62CM), XL(63-64CM) Head Color: Black/White/Gloss black&Green/Carbon/Matte black/Matte black&Red/Matte black&Blue/Gloss black&White/JKQ7/Blue（As shown） Bluetooth Features: 1 Built-in speaker, Hidden microphone Built-in anti-noise microphone Multi-pairing ability with bluetooth equipped phone, GPS, MP3 player, FM radio etc 1 Touch control for call answering, rejecting and redialing Listen to music via your Bluetooth with compatible MP3 players Listen to GPS voice command Function: stereo sound quality, automatic answering phone, listening to songs, own FM radio Battery: 550 mAh, battery life for 12 hours, standby for 48 hours. Host: Waterproof, rain does not affect the use, detachable, CSR Bluetooth chip built-in amplifier bass surround. Package Included: 1x Bluetooth Helmet Note: 1.Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!