Sunergy White Marque Solar Lights, 4-Pack Solar-powered outdoor lights charge by day, light automatically at dusk Perfect for walkways, driveways, gardens, patios Normal sunlight charges AA Ni-Cid batteries (included) for 8-10 hours lighting Fully assembled lamps, with spikes and stake extenders for quick installation Lights are 5 inches in diameter and up to 17 inches high (with both extenders)