Echo Valley Illuminarie Hanging Spiral Spinner Four-sided spiral catches the wind producing spinning and bouncing movement Hang from a shepherd hook, tree hanger, soffit or wall bracket Luminescent crystals in glass globe absorb light energy during day and release it at night in a subtle green glow Note: For best results place spinner in a location where it will receive no competing light source at night. Glow will only occur within the green swirl portion of the globe and is comparable to the glow seen on a watch face piece. Glow will gradually fade over time. Weather resistant electroplated antique bronze finish will withstand the elements and provide years of use and enjoyment