Livall C20 Smart Communter Helmet Blue The new C20 represents a quantum leap forward in safety and protection for commuters whose focus is getting from A-to-B. The C20 is a robust, waterproof, and fashionable smart helmet that is simple-to-use, comfortable, and packed full of genuinely useful smart tech. Patented built-in SOS Alert system - only when helmet connected to LIVALL Riding App. Quick flashing light, tidal light. Adaptive light Brake light Auto-power on/off Magnetic recharge cable. Colours Ocean Blue and Midnight Black. Sizing M (54-58CM) 7 LED Lights IPX4 Waterproof Battery endurance 36 hours. Approx 3 hours Charging time. Cycle Accessories Type: Helmet