Certified to exacting European standards: ECE 22.05. Meets or exceeds US DOT standard FMVSS 218. V-Com Bluetooth System supports wireless connection to bluetooth enabled cell phones, MP3, GPS or other devices. Uses Bluetooth 2.0 with EDR (Enhanced Data Rate) compatible with Bluetooth 1.1 and 1.2. Compatible Bluetooth profiles: A2DP and AVRCP. Confirm compatibility with phone manufacturer prior to purchase. Link 3 V-Com helmets for wireless driver-passenger or bike-to-bike interphone communication. Automatically re-pair when previously paired helmets return to interphone range. Long-lasting Lithium-Ion battery: 6-8 hours talk time, 48 hours standby. AC and USB charging adaptor included. Smoke tinted interior drop-down sunshield included. Smoke, light smoke and amber replacement sunshields available. 6-position, optically correct, scratch-resistant clear outer shield included. VEGA Series B shield offers 9 options: tints, mirrors and anti-fog. Adjustable, 2-stage center chin vent provides superior airflow and minimizes fogging. Forehead, cheek and rear venting maximize comfort. Coolmaxฎ fabric Comfort Fit liner is fully removable and washable. Liners are interchangeable for custom fit within size range. 2 shells for superior fit throughout complete size range: 2XS-M and L-3XL. Shell colors to match 2010 and 2011 Honda Goldwing motorcycles.