Advantages and disadvantages of ordinary luminous and tritium tube versions:

---The regular version requires light absorption (all light sources can be used, with better ultraviolet radiation). The tritium tube version does not require any energy (the tritium tube does not require any energy)

---The regular version is cheap and the tritium tube is expensive, and if the glass tube breaks, it won't light up (pay attention to protection to avoid collisions)

---The drawbacks of the regular version are also obvious: after absorbing light, there is only a brief resplendence, and then the brightness is very low, with only very weak fluorescence, while the brightness of the tritium tube version is stable.

Size: 33mm long (excluding titanium ring), 9mm diameter, weighing about 4g.

This is a very small and cute keychain - phone chain - necklace pendant. When the light is dim, you will find that it emits beautiful and soft light (various colors are available), and you can hang it anywhere you want to quickly locate in the dark (keychain, phone, bedside, wall, body). As a home accessory, it will make you no longer lonely in the dark and faithfully accompany you. It's getting dark, isn't it a very pleasant thing to lie down and admire the glowing colored "stars" before going to bed.

More COOL use: Remove the metal hanging ring and string it onto the necklace, this is a necklace pendant that is cool enough. In KTV, bars, discos, any dim place, only you are shining!! Chain it on your key backpack or phone, so you won't be afraid of not finding what you want when camping at night!