No Batteries Needed! Just Wind It and Let It Shine! Our Mini LED Lantern is perfect for use in a tent, RV or home. It comes with a carabineer to easily hang from a string line, tree branch, or inside of of a tent. Its compact size allows it to store easily - just 6.5" tall. Never worry about whether your lantern will work when you need it or how to power it because you just wind it up! Extremely safe for use indoors and makes a great night light. Winding for 1 minute gives you about 1 hour of light! Requires no batteries - save money and the environment! Requires no fuel - extremely safe to use indoors with no deadly carbon monoxide fumes.