Titanium Alloy Tritium Lamp Keychain Housing 3x22.5mm

Size: Height 28mm Diameter: 14mm Key ring diameter 12mm

Material; shell titanium alloy, a 3x22.5mm tritium tube is installed inside

Weight: 8 grams

noted: Tritium does not emit light during the day, but in dark environments it will emit light by itself without any energy, because tritium can emit light by itself for 25 years