Explorer CompassExplorer Compass Features 2-3/4 Easy to Read Direct Reading Dial Adjustable and Removable with Bracket and Thumbscrews 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 WarrantyApprox. Shipping Weight 1lb 454g Notes All compasses come standard with 12 volt lighting. 24 volt lighting option is available.Some custom built OEM models may have different lighting. Contact Ritchie for replacement lighting.