Features: Cylindrical tritium lamp. Waterproof polycarbonate casing. Glass breaker tip. Keyring and lanyard hole. Description: Light up the night with the Glow Rhino Ember Glow Fob. This keychain houses tritium, a hydrogen isotope that glows green without any external power source. This is the perfect fob for your keys, backpack, range bag, flashlight, and anything else you don't want to lose in the dark. The Ember Glow Fob includes a glass breaker for added functionality. Keep your most valuable tools close at hand! We carry a wide selection of Keychains for utility or just for fun. You're sure to find something that fits your needs!