Latest and brightest! Compared with other similar fluorescent tubes Keychain, the biggest advantage of our Tritium Gas glow light is that this tritium Gas Glow Keychain can be used underwater 100 meters, can be used in harsh environments.
Without any external energy, non-fluorescent sticks, without sunshine and power, sustainable self-luminous 15-25 years.

Features:

• Tritium gas tube, self-luminous, bright and visible in the dark.
• Long life span, glows continuously for 15 - 25 years.
• Perfect for decoration, jewelry, glasses, clock, etc.
• Suitable for indoor and outdoor use.

Specifications:

• Material: Tritium gas
• Size: 1.5mm*6mm / 3mm*22.5mm (optional)
• Color: Blue / Yellow / Green / Orange / Red / White / Purple / Pink (optional)