The Silva Mini mirror compass features a mirror that allows you to view the compass dial and the background at the same time. The fact that the compass dial can be seen at the same time the reference point is aligned makes mirror compasses more desirable for taking accurate bearings.A mirror-sighting compass is at its best in open terrain where you must determine direction over long distances. Because you needn't lift your eyes from the compass in order to look into the terrain, the direction determined with the Silva 1-2-3 System becomes more accurate. FeaturesMirrorLanyard