The Dorcy 1,800-Lumen Rechargeable Adventure Lantern features 4 light functions including high, medium high, medium low, and low. With the variety of brightness modes, it allows you to have the right amount of light for any situation along with controlling the run time. With a 4,500 mAh Li-Ion rechargeable battery, this lantern has a 6-hour charge time and has a USB output port to charge devices. The lantern has up to a 22-hour and 45-minute run time while producing 80 lumens. This lantern is also weather-resistant and includes foldaway clips for hands-free use. It is ideal for hiking, camping, and other outdoor adventures as well as power outages and other emergencies.