Crazy Genie Rechargeable Bike Bicycle Cycling Safety Zone Tail Light 9 LED with 2 Laser Waterproof Great for Student, Baby Stroller, Jogging, Walking, Bicycles, Car Emergency, Horse-riding, Road Emergency ETC (Green) Super Bright 9 LED Taillight And 2 Laser Safety Warning Line Battery Powered by built-in rechargeable 3.7V 14500 lithium ion battery with 1,200mah Working time: Continuous working time  6 hours 3 modes:quick blink, slow blink and continue light. Waterproof, safer in water fog when riding in the rain Kindly Note : Do not look directly at laser lights Use Great for student,baby stroller,jogging, walking, bicycles, car emergency, horse-riding, road emergency&camping,ETC