This mighty, little lantern is one of the finest LED must-haves. A special conical mirror reflects the super bright LED bulb. Works perfectly as a super compact emergency light, too. Despite its tiny size, it's one of the brightest single bulb lights we've ever tested. Twist the body to turn it on. Expect 25 hours of light, or over 50 hours in flashing mode. Exquisite water-resistant design. Use the included hook or carabiner to attach it to your keys, tent, belt loop, or gear. Plastic. Two lithium batteries included.