No need to rely on batteries or an outlet to power this emergency flashlight. It has a crank that sits down inside the top out of the way when not in use. When needed you just flip the handle out and start cranking. Then use the switch to turn on and off the light as needed. Need more lite? keep cranking. And deep inside hte handle is a blade to cut yourseatbelt in case of emergency. Also on the front tip there is a window breaker inder a cover cap. #rankboosterreveiw #Sponsored #KingCamp https://www.amazon.com/KingCamp-Emergency-Traveling-Emergencies-Hurricanes/dp/B01AN3MFVA