Explorer CompassFeatures:2 3/4″ (70 mm) Easy to Read Direct Reading DialEasily Installed, Fits 3.75″ (9.53 cm) Mounting HoleInternal Green Night IlluminationBuilt-in Compensators to Easily Adjust for DeviationScientifically Matched Sapphire Jewel & Hardened Steel Pivot Dial MovementPowerful DirectiveForce Magnets for Fast Heading Lock-onMovable Sun ShieldHigh Temperature Composite Construction for Extended Operating Range100% RepairableExclusive 5-Year Ritchie WarrantyApprox. 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.