Count on it today. Rely on it tomorrow. The Police Security Dover Rechargeable Flashlight is optimal for automotive technicians and mechanics - any professional demanding long-term flashlight performance. With our Quik Connect USB charging system (cable included) this 800-lumen flashlight functions with a 18650 rechargeable lithium-ion battery delivering up to 6 hours runtime. With High Low Flash modes and Slide Focus the Dover Rechargeable Flashlight is immediately adaptable to a variety of situations and will be for a long time to come.