The S&WA(R) Night Guard(TM) Pro has an impact resistant, waterproof polymer body with an integral clip. It's waterproof to 1m submersion and has an insanely bright LED light producing 419 lumens. When the power goes out, trust Night Guard. Night Guard(TM): Your extreme defense tool in the dark with ultra-bright LED lighting built for everyday use. Includes: Digital switch With Memory Retention Specs: 419 Lumens 16.8 hr. Runtime (Depending On Mode) High, Medium, and Low Modes Beam Distance Of 240 Meters Runs On (1) (1) AA Battery (Included)