Multi Function Electronic Vehicle Car Sea Marine Boat Ship Compass Navigation Outdoor Description:          This voyager compass is designed for showing directions of autos, boats, caravan truck and so on. Because of its mountable and portable advantages, it is very convenient to be installed on the car or boat. Furthermore, the compass can keep balance individually and read dials precisely. Come on, this compass is worth buying! Features: 1. The pointing direction of the compass is same with the way forward of the vehicles. 2. Built in accuracy compensator. Read dials precisely and keep balance individually. 3. It can guide the car or boat very convenient. 4. Waterproof, corrosion resistant. 5. Fit for car, watercraft, boat, caravan and truck. Specifications: Main Body Material: ABS Color: Black Size: 5.7 x 5.7 x 5.8cm / 2.24" x 2.24" x 2.28" Package Weight: 65g Fitment: For Watercraft, Boat, Caravan and Truck Package Included: 1 x Compass 1 x Magnetic Declination Adjustment Plectrum 1 x Gummed Paper 2 x Screws 1 x Manual Book Note: Please allow 1-3cm error due to manual measurement. Thanks for your understanding. 1. Taking into account the convenience of the driver's observation and habits, this product deliberately reverses the magnetic steel of the product, and the compass points in the forward direction of the car (the direction of the compass is opposite to that of the conventional compass products, just read the pointer of the product watch core. scale shown); 2. The guide balls from the factory are all accurate guide balls in the opposite direction, and do not need to be adjusted. Only when there is a magnetic field influence when installed on a vehicle or boat, adjustment is required; 3. Metal objects will affect the interpretation of the compass, so try to stay away from vehicles, cameras or other metal objects when positioning or interpreting the direction. Metal interference can affect the interpretation of the compass from 20 degrees to 60 degrees; 4. When storing the compass, pay attention to the storage location, and do not place it in a place full of electromagnetic effects. The magnetoelectric area will also affect the accuracy of the compass; 5. Avoid exposure to sunlight, which will weaken the magnetism of the magnetic needle.