NIUNIU Multi-function --- This professional grade military dashboard altimeter compass will always lead you in the right direction. Fit for car, watercraft, boat, caravan and truck and anywhere the beaten track takes you High Accuracy --- Digital car compass built-in accuracy compensator to easily adjust for deviation, which makes the reading more precisely, improve its accuracy and decrease its errors Navigation Compass --- Boat compass suction is easy to install and visible lubber line for easy direction reading. The pointing direction of the compass is same with the way forward of the vehicles.Made of high quality material, Waterproof, corrosion resistant Bracket Mount Design --- Bracket mounted compass can be mounted on deck or dash; allows compass to remain at proper viewing angle. Mid size bracket mount, more stable for navigational course changes Great Balance Portable --- The car gyroscope compass possessed fast response, high sensibility, keep balance individually, precision engineering reading display. With compact size, this compass is very portable, and it is easy to install or use Delivery Quantity: 1pc, Size: 57*58*57mm Colour: Black Kind tips 1. Package content: only the above package content, excluding other products. 2. The size is measured manually, please allow 1-2 cm measurement error 3. Due to different displays and lighting effects, the actual color of the item may be slightly different from the color shown on the picture.