Adjustable Suction Cup Car Dashboard Navigation Compass Ball for Outdoor Boat Marine TruckFeatures:1. This product is a professional multi-function car navigation compass.2. The user can use the correction tool included with the compass deviation correction.3. Due to the convenience of observation and driving habits, this product has clearly inverted magnetic steel. So, the compass of this product indicates the direction in which the car is going. (Reverse to the direction of conventional compass products.) Specifications:Material: PlasticColor: BlackProduct Size: 70x50x50mm/2.76x1.97x1.97"Net Weight: 49gGross Weight: 60gNote:If the indication is not accurate in the car, it is generally caused by the interference of the magnetic field in the car. Changes to a different place. It is recommended that you do not have more than two navigation compass balls together, as they will collide with each other, affecting the direction.1 x Navigation Compass Ball on the dashboard