Attwood Marine LightArmor Masthead Anchor Light w/ Use Powerbase 42in. 4 feet (20 meters). Specifications for Attwood Marine LightArmor Masthead Anchor Light w/ Use Powerbase: Manufacturer: Attwood Marine Light Type: Interior Features of Attwood Marine LightArmor Masthead Anchor Light w/ Use Powerbase LED rated for 50000 hours of life Shock-proof corrosion-proof and water-proof electronics Three nautical mile visibility 360 deg Compatible only with the Attwood PowerBase (6100-LT-7) Package Contents: Attwood Marine LightArmor Masthead Anchor Light w/ Use Powerbase Attwood Marine 7800-42-7: LightArmor Masthead Anchor Light w/ Use Powerbase 42in