Smart4u Motorcycle Helmets bluetooth Headset Speaker Lightweight Ventilation Adjustable Safety Mountain Bike Bicycle Hel

Specifications BrandSmart4uModelEH10BNameBicycle HelmetsMaterialABS EPSHead circumference size56 62cmProduct size238 178 281mmProduct weight669±50g Features Using latest 4 2 Bluetooth technology superior signal transmission ultra low power consumption Support all Bluetooth devices support automatic answering function no need to answer the phone manually when calling safe driving Built in high quality anti interference microphone external windproof sponge can effectively realize hands free answering hang up the phone high sound fidelity Built in mini USB charging interface for quick and easy charging 100 hours standby 8 hours talk time 3 Layers of Structural Protection Helmet in line with the 3C quality certification standards The outermost layer of the helmet uses high strength ABS shell the middle layer uses pressure resistant cushioning material EPS and the innermost layer uses a cushioning liner to guard your riding safetyat all times WindproofWaterproof Effective barrier to wind sand and droplets Wide and clear field of vision can be used with glasses at the same time to protect you from the wind and rain on the way to work Package included 1 x Bicycle Helmets Note Please allow 1 2cm differs due to manual measurement Due to the different display and different light the picture may no reflect the actual color of the item Thank for your understanding