For those with distinguished tastes in design, durability, and function. The Starlite Capacitor Light stores energy from sun exposure while also charging its rechargeable battery. On days when there is insufficient sunlight to charge the battery, the capacitor re-energizes the battery with what it's stored, so you never have to go without light. Four LEDs are visible for up to 1/2 mile. Aluminum and polycarbonate construction is waterproof to IP67 standards. 5-lumen output. 1000mAh Ni-MH battery. 2 x 30F capacitor. 4.72"L x 4.33"W x 0.78"H. 5-year warranty. 1000mAh Ni-MH battery Four LEDs are visible up to 1/2 mile 5-lumen output | Dock Edge Dockmate Starlite 120 Solar Capacitor Dock Light