Description:There are no need for battery charging glow pebbles, these glow in the dark pebbles are light up by sunlight.Luminous stones are not just cost-effective, but also environmental, sustainable, self-luminous and self-rejuvenating.Made from high quality plastic material, the luminous pebble is environmental and durable.The diameter of per stone is about 2cm-3cm.It is very suitable for indoor and outdoor decoration, you can use these glow in the dark stones to line up sidewalks, paths or driveways, lay the edges on flower beds, or use these luminous pebbles to fill pot plants, make DIY decorations for vases, aquariums.Item Name: Luminous StonesMaterial: PlasticColor: ColorfulFeatures: Glow in The Dark, Bright, Self-luminousApplications: Garden, Lawn Yard, Aquarium, Walkways, Driveways or HouseplantsSize Details: Diameter: 2cm-3cm/0.79"-1.18" (Approx.)Notes:Due to manual count, there may be slight difference of 1-5 pieces in the quantity. Hope you can understand, thank you.Due to the light and screen setting difference, the color of item may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Usage: Before use, you need to expose it to light for about 10-15 minutes to achieve the luminous effect, and then gradually dissipate over time, Glow in the dark rocks will continue to glow for up to 3-4hours in the dark darkness, If the brightness is not enough, please use light again. In theory, these self-luminous pebbles can function for up to 15 years.Package Includes:100 x Luminous Stones