Precision Watch Band Clip-On Compass, Factory Sealed This compass has a built in universal clip-on on the back of the unit This is ideal for clipping on watches, belts, purses and pockets This is a highly sensitive miniature compass This item is also useful for detecting the presence of a magnetic field in watches, instruments and other components This compass is a perfect navigation tool for hunting, hiking and other outdoor activities Measurements are 1 1/8-Inchx 1-Inchx 6/8-Inch Perfect miniature size rotate-able dial precision compass