Explorer CompassExplorer Compass Features:. 2-3/4" Easy to Read Direct Reading Dial. Easily Installed, Fits 3.75" (9.53 cm) Mounting Hole. 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. Approx. Shipping Weight: 1lb (454g)Notes: Comes standard with 12V lighting. 6 & 24V lighting options are available.Some custom built OEM models may have different lighting. Contact Ritchie for replacement lighting.