Specification:
Product name: Barn Lantern Metal Keychain With 3x22.5mm Tritium
Material: Zinc plate silver alloy +Acrylic
Keychain Size: 18mm x 50mm (diameter x length)
Tritium Size: 3x22.5mm (diameter x length)
Color:green,blue,orange
Weight:15g

Features:
1.The Ultimate Glow-In-The-Dark Gadget Keychain light
2.Unbreakable polycarbonate casing,can be used in underwater 100M
3.Self-Luminous about 15 years(without any external energy)
4.Suit for 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 Barn Lantern Metal Keychain With 3x22.5mm Tritium