While it is much smaller than a typical compass, you do not lose any quality. Functions in extreme conditions and even underwater. This quick and reliable little guy also glows in low light. You can rotate the dial to indicate the exact rotational heading degree in reference to North. This model is pre-calibrated to be used in the northern hemisphere (NH).
This mini compass also includes a clip that easily goes onto any clothing cuff, watch, map edge, etc. Because it is so lightweight and becomes a part of your pre existing gear- you won’t even notice it!