Clip On 5 LED Head Cap Hat Light Lamp Torch Fishing Camping Hunting Outdoor Sports & Home Improvement LED uses very little energy, typical lifetime 10+ years Uses 2 lithium cell CR2032 3V batteries (included) Heavy Duty Hat Clip - Tight grip when you need it most. Will never fall off. Multipurpose - Use it while fishing, biking, camping, hunting or even working around the house