Explorer CompassFeatures: 2 3/4" (70 mm) 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. Specifications: Read: Front Mounting Style: Flush Backlight: Yes Lubber Lines: Yes Box Dimensions: 5"H x 6"W x 6"L WT: 0.9 lbs UPC: 010342160003 Quick Guide (pdf)Owner&';s Manual (pdf)