The Starlite 108 five-LED solar dock light is for those with distinguishing tastes in design, durability and function. Not only are these unique and advanced solar lights built to provide a long and useful life, they actually seem to put out more light than they take in during the charging process, with visibility of up to half a mile. A built-in super capacitor stores the energy created from exposure to the sun and replenishes the rechargeable battery. On days when there is insufficient sunlight to charge the battery, the capacitor re-energizes the battery with what it has held in safe keeping, so you never have to go without light at night just because there wasnt enough during the day. 4 1/4" x 3 7/16" x 7/8". Five lumen light output. IP68 waterproof rating. Five-year warranty.