LED Portable Stern Light with Suction Cup Heavy Duty, Ideal for boats for skiing, sailing boats and users do not work Each light requires 2 x 'D type' Installs easily in the transom of the boat Package Dimensions: 7.0 L x 33.0 H x 21.5 W (centimeters) Built with LED lighting for low power consumption. Perfect for smaller boats or as an emergency back up. Durable, heavy duty suction cup. All around white lens. On / Off switch. Requires 2 "D" cell batteries (not included)