This Square Solar Dock Light is a great addition to any dock, deck, or walkway. Light automatically turns on when it becomes dark outside and can be seen up to 1/2 mile away. Highly reflective light is corrosion-resistant for extended durability. Aluminum construction meets IP68 waterproof rating standards. No maintenance required. 4-1/4" x 4-1/8" x 7/8". Visible up to 1/2 mile away Designed with an IP68 waterproof rating Mounting hardware not included | Square Solar Dock Lights, 2-Pack, White