1.Digital Light Display: Boat marine compass can be linked to the power supply 12V dashboard of a boat or sea ship. Compass for boat comes up with light to fix lighting issues. Now, you can clearly see the dial whether you're driving or sailing during the night. 2.High Exact: Adjustable mounting bracket and visible lube line for easy reading of directions, high exact nautical compass. Fast response, high sensitivity, individually balanced, exact engineered readout displays. Builtin accuracy compensator, easy to adjust the deviation, make the reading more accurate. 3.HighQuality Materials: The housing of marine compass is made of high quality ABS plastic material. It can work in extreme weather conditions and is ideal for sea boats or marine vehicles. 4.Convenient to Use: The direction shown by electronic navigation compass coincides with the ship's heading. The heading and 180degree direction are displayed on the dashboard compass of the boat, so that you can back.