Ritchie Trek Tr-31 Marine Compass -Black Ideal for Runabouts, Center Consoles, Ski Boats, Flats Boats, Bass Boats, Cars, Trucks, RV's and ATV's; 2 1/4" Direct Reading Dial with Large Numerals for Easy Reading; Black with Black Dial, Bracket Mounted; Strong Directive Force Magnets and Composite Dial for Fast Performance; Built-in Compensators to Correct for Deviation; Extra Large Diaphragm and Rugged Construction Provide Extended Operating Temperature Range; High-Impact Rubber Accent Strip; Built-in, 12-Volt Green NiteVu Lighting; 100% Repairable; Exclusive 5-Year Ritchie Warranty;