- Material : Luminescent pigment & Resin.
- Simply expose them to sunlight for charging for 1-2 hours and shows glowing effect in the dark for 30minutes to 2 hours.
- Ideal for fish tanks, yards, waterspaces, potted plants, and garden.
- Harmless to humans & animals, and safe for children to play with.
- NOTE: Spread out the glow in the dark rocks when charging to make sure each is fully illuminated. Make sure to use by children ONLY under adult's guidance.