Stainless steel. Approved for USCG 2 NM (Colreg 2 mile). 12 volt.                          4-3/4" x 2-3/4". Does not include gasket. 

**Note: All USCG approved navigation lights must be mounted properly to provide the correct visual alignment and allow unimpeded sight lines. Please refer to United States Coast Guard regulations for 1 NM and 2 NM navigation lights for more information.