Rechargeable Waterproof Bike Cycling Safety Zone Tail Light 8 LED with 2 Red Laser Rechargeable Bike Cycling Safety Zone Tail Light 8 LED with 2 Red Laser Rechargeable: Built-in 14500 Li-ion battery that can be recharged by USB. 1200mAh battery working about 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. Package include: 1x Bike lights