Plastic Titanium Alloy Tritium Keychain Self-luminous for 25 Years

There are two shell materials, PE and titanium alloy, and the interior is inlaid with 1pcs 3X22.5 tritium tube. Tritium can self-emit light for about 25 years, no energy is required, and light cannot be seen during the day, and it will only emit light at night. Note that the brightness of each tritium tube may be different. If you are very concerned about brightness, please buy with caution.
The shell adopts a threaded structure and does not require glue. That is to say, you can open it at any time, or you can replace the tritium tube yourself. We can also sell the shell separately.