Important! This is not a replacement for professional equipment and should not be considered such. Easy to install anywhere with 12V DC Power 12V Power Input Speaker is 6 inches long and 4 inches height 100W Speaker provides very loudly sound - up to 115 decibels unit at full volume. 5 Siren sound...

X-Port Tactician™Surface Mount CompassXP-98W Tactician Features:3" CombiDial with Tactical Quadrants show Wind Shifts and HeadersCourseMinder™ Moveable Bezel & Heading Indicator Locks-In Rhumb or Lay LinesForward Lubber Line to Steer Magic CoursesCompact 4 1/4" Base DiameterLow 2 3/4" Mounted Height...