Power: USB charging. Flash about 24 hours. Function: Waterproof, Shockproof, Safety. Only side & rear warning light about 1 month.
ROCKBROS Cycling Light Helmet Bike Ultralight Helmet Electric Bicycle Helmet USB
ROCKBROS Cycling Light Helmet withTaillight Ultralight Helmet Bicycle Helmet USB
ROCKBROS Electric USB Helmet Bike Ultralight Helmet Cycling Light Helmet 3 Modes
ROCKBROS Electric Bike Ultralight Helmet USB Helmet Cycling Light Helmet 3 Modes
ROCKBROS Kids Bike Helmet with LED Light - For Youth Ages 5-12 Year-Size 54-58cm
ROCKBROS Cycling Clip Taillight Rear Bike Light Night Safe Warning Light 2 Pcs
