Navilight 2NM Tricolor w/Navimount Base & Rail Mount - BlackNavimount Base Lights will work with Railblaza mounting systems, when used with the Railblaza 932 converter. Navimount Base lights include a U-Bracket and Navibolt-bracket.Features: Tricolor Masthead light 135Adeg white, 112.5Adeg red, 112.5Adeg green with 12 hour burn time BiColor side light with 20 hour burn time Red side light with 38 hour burn time Green side light with 38 hour burn time White Sternlight with 32 hour burn time Navimount RAIL Mount - Black The Navimount RAIL mount is designed to attach the Navilights with Magnetic base, Navimount base or Suction base onto any 25 or 35mm / 1" or 1-1/4" rail. Navilight models 001, 010, 040, 305, 340 require in addition the Navisafe converter Navimount / 960 Navilight models 041 and 341 do not require additional converters and can be mounted directly WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov. Specifications: Housing: Black Lens Color: White/Red/Green Visible Range (Miles): 2nm Voltage - Input Range (Volts): 3 AAA Batteries (Not Included) LED: Yes Box Dimensions: 3"H x 3"W x 5"L WT: 0.6 lbs