5x80mm Tritium Tube Self-luminous 15-Years Keychain Green

Specification: Product name: 5x80mm Tritium Tube Keychain Material: Tritium gas Waterproof: 100m Color: green light range:7-8cm Weight10g Size: 5x80mm Features: Tritium tracheal illuminated 15 years, no batteries, no accumulation of light. It can be used in underwater 100 m, can be used in harsh environment. Tritium gas emitting techniques have been applied in various areas to civil. Usage: gifts or act the role ofing is tasted, buckle in key string, backpack, mobile phone chain, pet chain, the head of a bed, and so on.In the KTV, bar, no dark place, only you in the glow.. Package included: 1 x 5x80mm Tritium Tube Keychain