Ships from Hong Kong. -Extremely sensitive with precision dial. -Excellent for hiking, camping and outdoor activities. -Can also be used for detecting the presence of a magnetic field in watches, instruments and other components. -High impact light weight outer body. -Easily folds to fit in your pocket.One size fits most. This Compass is easy to install and operate. size: 7.6??5.7??2.5cm Portable design, convenient to carry. High sensitivity and stability, more fit for rugged area. This lightweight compass can give you a reliable and accurate performance. Excellent for hiking, camping and outdoor activities.