The compact size LED zoom light head can be extended or narrowed by simply sliding the light head. Strong irradiation with a maximum irradiation distance of 988.4 ft (300 m). You can switch between 5 lighting modes according to your application. The main unit is made of durable aluminum alloy and splash-proof so you dont have to worry about biking, walking, camping, outdoor activities, disasters, or sudden rain. It is compact enough to store and carry around, so it can be used in a variety of situations. Continuous Usage Time: Strong Lighting: Approx. 5 hours, Low Lighting: Approx. 12 hours. *Varies depending on the battery and environment.