Ritchie Explorer Compass Features 2 3/4" Easy to Read Direct Reading Dial Compact Low-Profile Design Quick Push-Button Removal of Compass Module for Storage and Security Choice of Colors Internal Green Night Illumination Built-in Compensators to Easily Adjust for Deviation Scientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial Movement Powerful DirectiveForce Magnets for Fast Heading Lock-on Movable Sun Shield High Temperature Composite Construction for Extended Operating Range 100% Repairable Exclusive 5-Year Ritchie Warranty