Sol Mar Color Changing Solar Lights - Size 10 Pack The included ground spikes make installation a snap. And because they're solar powered, there's no wiring required and no expensive electricity bills. Set includes 10 lights, each with 7 rotating colors: red, green, blue, yellow, cyan, purple and white. Also features a solar rechargeable design that provides up to 8 hours of light per charge, auto on at dusk, on-board solar panel, strong ABS design and elegant frosted lens. 14.75"H x 2.75" dia. 14.75" high with stake.