Get into a rockin' good mood with the Artkalia Stonnia LED Stone. This rock-shaped light is made out of smooth White Opaque polyproylene. This durable material and waterproof construction make Stonnia suitable for shining its atmospheric color-changing LED light virtually anywhere, including a pond or pool. Available in two sizes. Artkalia was founded in 2008 to combine energy efficient LED technology with attractive modern design. In order to make such design and efficiency accessible to as many people as possible, they have made their portable LED lighting affordable, fun and easy to use. Artkalia lighting designs enhance moods and indoor and outdoor spaces with their friendly, contemporary forms as well as their signature light color-changing technology.