Attention: This product is not an electronic product and will not automatically emit light. It will only emit light after absorbing sunlight or light. After receiving the product, you need to place it in sunlight. At night, you can shine your phone's light up close on the product, and the product will absorb the light and emit light. Thank you.

Luminous Valve Caps Fluorescent Red Night Glowing Car Motorcycle Bicycle Wheel Styling Tyre Hub Universal Cap Decor 20Pcs
Specification:

Material: ABS
Color:red/green/blue/yellow
Size: About 1.6cm *1.2cm, inner diameter 0.8cm
Applicable: Universal for models
Quantity: 20pcs

Describe:
100% brand new and high quality
Portable and durable, easy to carry and light in weight.
Made of high quality lightweight ABS.
and decorate your wheels.
Corrosion and waterproof.
Easy to install. Just screw it on

Package includes: 20*luminous valve cap
Note:
1.Each Valve Caps needs to be recharged in the sun first, so that it will light up when used at night
2.Due to some factors such as display differences, there may be some color difference between the object and the picture. Thank you for your understanding