Attwood Telescoping Portable Clamp-On Boat Bow Stern Light These Attwood Telescoping Clamp-On Boat Bow Stern Lights are composed of sealed, shock-proof composite housing that is built to last in harsh conditions. They feature a water-resistant, shatter-proof polycarbonate lens and a heavy-duty C-Clamp. Providing 150 hours of run-time on three AAA batteries, this boat bow and boat stern light will ensure long lasting use and durability. Features Water-Resistant Shatter-Proof Polycarbonate Lens