Brand new and high quality!
Key ring material: titanium alloy
Material: TC4 titanium alloy&Brass
Brass size: length 33mm (not including titanium ring), diameter 9-10mm, weight about 8g.
Titanium alloy size: length 33mm (excluding titanium ring), diameter 9mm, weight about 4 g
Inner tube size: diameter 3mm length 22.5mm
Package include: 
1*Pendant
Features:
1. The patch material is made of TC4 titanium alloy and refined by CNC. Each patch is inlaid with 1 luminous tube No need for any energy, bright for 25 years.
2. In order to facilitate the customer to choose the color, the brightness is arranged from high to low: green > blue > yellow > red > purple > white (note that the tube can only emit fluorescence, the daytime is not bright, the night is more Dark places, the brightness is more obvious)
Note:
1. The Self luminous lamp tube is not bright during the daytime, the more dark, the more obvious the brightness
2. The tube is a glass tube, although the design has been lower than the ring plane, but please avoid the impact, if accidentally crashed, the tube needs to be purchased separately
3. The gas inside the manifold has a small amount of radiation. As long as the tube is not broken, the radiation is 0. If the tube is broken, the door and window can be ventilated. This kind of miniature tube is very small, so don't worry