These 225° bicolor (red/green) navigational lights offer up to 1 NM visibility. Electronics are fully sealed to block out moisture. Built-in "Tell Tale" indicator gives the operator a visual indication from behind the light of when it's on or off. Draws 2.4 watts at 12 VDC. For boats up to 39.4 ft. (12m) in length. 14" pole is compatible with both Attwood and Perko bases. Base sold separately.