SS-2000W SuperSport (Flush Mount) SuperSport Compass Features 4 1/2" PowerDamp Plus, High-Visibility Blue Dial with Extra Large White Numerals Easily Installed, Fits 4.75" (10.16 cm) Mounting Hole. Built-in Compensators to Easily Adjust for Deviation Scientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial Movement Internal Gimbal Systems for Maximum Stability During Adverse Pitch and Roll Conditions Powerful DirectiveForce Magnets for Fast Heading Lock-on Exclusive Built-in Green NiteVu Night Illumination in Movable Sun Shields 45 Degree Lubber Lines High Temperature Construction for Extended Operating Range Custom Fitted Protective Covers 100% Repairable Exclusive 5-Year Ritchie Warranty