Smart4u SH20 Smart bluetooth Helmet USB Charge Speaker Handsfree Phone Call Voice Waterproof Riding Cycling Helmet

Specification BrandSmart4uModelSH20Helmet materialEPS PCShell size58 62cm L Battery 3 7V 400mAhBattery endurance3 6 hours for musicStandby endurance180 daysPowerDC 5V 0 5AWeight320g L Features Smart bluetooth Helme one button answer bluetooth music Built in bluetooth speaker wind resistant microphone Superior material with integral molding Concise design for a classic Comfort in every details Package included 1 x Smart bluetooth Helmet1 x Instruction Manual1 x USB cable