Navigation for marine MultiFunction for Yacht Outdoors Hiking Feature: 1. Professional multifunction , magnetic declination adjustment, high accuracy. 2. With 12V LED for easy reading day or night. This is and ideal choice for emergencies on board. 3. Wide for range of applications, suitable for the for marine , vehicles, boating, travel, hiking, outdoors, etc. 4. The installation is simple and does not require complicated operations, convenient for using. 5. Made of premium ABS material, anticorrosion and , can withstand harsh for marine environment. Specification: Item Type: Magnetic Material: ABS Performance: 1. The structure material should be non-magnetic, and the pointer is made of high-quality alloy material. 2.Pointing Error: No more than 1.50 3. Friction Error: No more than 1.50 4. WhirlError: No more than 3.50 5. Temperature Test: Under the ambient temperature of -30C-+60C, the should be without any damage, and the liquid in the sphere should have no change. Package List: 1 x 1 x Copper Contact 3 x Screws How to use: Itisinstalledandfixednearthecentralcontroloftheyacht,theredwireisconnectedtothepositivepole,andtheblackwireisconnectedtothenegativepole.