● Glows continuously for 15 years
● Bright and visible unique clear light glow
● Completely contained and self-powered
● Perfect for tagging zippers (on tents， bags， etc.)， tying on keychains， flashlights， etc.
● Diameter: 6 x 1.5 x 1.5mm
● Super lightweight: 5g weight only

The package contains 1pc only