WIDE APPLICATION: This fast response and precision engineering fits for car, watercraft, boat, caravan and truck. Because of its mountable and portable advantages, it is very convenient to be installed on the car or boat. CONVENIENT TO USE: With compact size, this is very portable, and it is easy to install or use. Adjustable mount bracket and visible lubber line for easy direction reading. Bracket mounted , can be mounted on deck allowing to remain at proper viewing angle for the accrate directions. READ DIALS PRECISELY: Built-in accuracy compensator to easily adjust for deviation, which makes the reading more precisely. Furthermore, the can keep balance individually and read dials precisely. Fast response, high sensibility, keep balance individually, precision engineering reading display. Come on, this is worth buying!. DESIGNED FOR: This is designed for car, boat or watercraft and the reading is totally opposite to normal . For example, when you are towarding the North while the is placed in front of you,you will face the "N" in front of you and the "S" pointing north direction. QUALITY ABS MATERIAL: Made from ABS, this is waterproof, resistant, so that it is very suitable for sea boats or marine vehicles. This voyager bracket mount is designed for showing directions of autos, boats, caravan truck and so on. Please Note: The product is magnetic field sensitive. The deviation will be caused by changes in the magnetic field of the use environment. Need to be recalibrated for environmental bias.