The Shadow-Caster Single-Color (Great White) Underwater Light built into a durable bronze housing, complete with a scratch-resistant glass lens. This 24-LED round light is designed to be marine vessel hull-mounted for continuous submersion in seawater. The Shadow-Casters unique design allows it to produce maximum light output and maximum LED life â over 40, 000 hours! All necessary electronics are integrated into the housing and are resistant to vibration and the elements; no additional external components to install â just connect the cable (submersible to 20 feet). Its innovative protection system automatically disconnects the input entry when excessive voltage or reverse polarity is detected. Thermal throttling above-water protection features a control system that detects internal temperature and adjusts energy production down to avoid damage. The low-profile design allows for easy surface mounting, requiring no alteration to the main hull. Shadow-Net enabled. A 10 submersible cord and installation diagram are included. Two-year warranty. Made in the USA. SPECIFICATIONS:• 90 Watts (7.5 amps @12 volts)• 4 Outside Diameter• Input Range: 10-40 Volts Auto-disconnects input entry when excessive voltage/reverse polarity is detected Thermal throttling above-water protection prevents damage due to overheating Low-profile design for easy surface mounting; requires no alteration to main hull | Shadow Caster Shadow-Caster Single-Color Bronze Underwater Light 24 LEDs, Great White Made in USA