Material:EPS+PC Size:Head Circumference 57-61cm, Head Width ≤16.6cm 1. This helmet is equipped with 7 automatic LED light-sensitive warning lights, which can be automatically turned on or standby according to the ambient light intensity. The screen is precision mirror polished and the visible distance is over 180 meters, and the light mode is changed by buttons. The tidal light/strobe light can choose different lighting modes according to different situations, and it is safer and more reliable to ride at night. 2. The air duct is designed with 12 vents and high efficiency. It can make the ride more comfortable, breathable, cool and waterproof. The IPX4 waterproof design allows you to ride in the rain. 3. The outer casing is made of PC (polycarbonate) and the inner casing is made of imported high-density EPS PSI-205T (polystyrene foam). Internal and external integrated molding processes make it more resistant to impact and make your driving safer. 4. Magnetic charging design, charging with USB, charging for two hours, can use two weeks, 180 hours standby and 36 hours battery life. 5. Comfortable to wear, no pressure, safe to ride.
Specification: 1. Size: 28.2x 22.4x16cm. 2. Battery: 3.7V 455mAh battery. 3. Life time in lighting mode: 26-36 hours. 4. Standby time: 180 days. 5. Charging time: 3 hours. 6. Electrical parameters: DC 5V / 1A. 7. Light mode: flashing light - strobe light. 8. Charging mode: USB charging interface.