Light-Sensitive Color-Changing Beadable Pens

Shell material: Plastic
length: 14.7cm
Diameter: 1.15cm
Net Weight: 6g
Kindly noted:
1. Light resistance: the  color changing powder will fade and fail quickly under strong sunlight exposure, so it is only suitable for indoor use.
2. Heat resistance:
The exposure time of photosensitive toner applied in different resin is different. The continuous exposure time may only be 5-12 hours, and the discoloration effect will be greatly weakened.
But when used indoors at room temperature, the color changing effect can reach several years.
For example:
2 years uselife for 10 minutes sunlight exposure per day.
1 years uselife for 20 minutes sunlight exposure per day.
3 months uselife for 25 minutes sunlight exposure per day.