Maximum visibility and minimal power consumption. Requires only around 10% of the energy a typical bulb requires. The minimum visible distance of the LED light source is 2 nm or 3 nm (masthead). The unit is completely sealed with a high-impact housing and UV-resistant, OEM-quality acrylic diffuser. Pre-wired with 2.5 m of cable for easy installation. Operating voltage: Multivolt TM9 to 33 V DC. Overvoltage protection up to 200 V and reverse polarity to 700 V. Power consumption is less than 2 W. Service life: min. 50,000 hours. Dimensions (W x H x D): 8.7 x 9 x 5.7 cm. USCG A16-approved.