? [Application]: This is a professional multi-functional dashboard compass, ideal for boat, boat, truck, caravan and so on, works well for navigation without extra power or electricity tools [Design with LED lights]: This digital compass navigation can connect the vehicle or ship the power with the power cord to let you read data in dark environment [High Accuracy]: This dash boat compass with quick response and accurate navigation makes it easy to read the accurate dial; An additional correction tool is provided to correct the compass deviation as needed [Quality Materials]: Made of high quality ABS plastic material, which is durable, corrosion resistant, environmentally friendly.the environment; And the marine compass navigation with adjustable mounting bracket can easily attach to almost any flat surface using EVA foam sticker or screws [Unique Design]: Considering the convenience and habit of drivers, this product deliberately reverses the magnetic steel of the compass, so that the compass points in the direction the car is heading, as opposed to conventional compass products