Glow Rhino Ember Glow Fob Clear Plastic with Green Tritium. Like its metal cousins the Ember can be connected to your keychain or any zipper on your range bag backpack sleeping bag or tent. Tritium is self-powered and self-reliant just like you. It doesn't require an outside charge and has a half-life of 12.23 years. Buy for yourself and your family & friends around you. Specifications for Glow Rhino Ember Glow Fob: Manufacturer: Glow Rhino Color: Clear Fabric/Material: Polycarbonate Length: 1.13 in Package Contents: Glow Rhino Ember Glow Fob 1 Cylindrical Tritium Lamp Glow Rhino EMBER-001-XG: Ember Glow Fob Clear Plastic with Green Tritium