The Suunto MB-6 is a combination of a hand bearing and base plate compass in a highly shock and impact resistant Noryl? matchbox style case. Though small and compact, the MB-6 boasts a host of invaluable features otherwise only found on larger compasses. It is ideal for marine as well as wilderness use.Matchbox style. Highly shock and impact resistant case. Drop-down sighting mirror, and fixed rifle-style sites. Jeweled bearing. Adjustable declination. Luminous needle. Clinometer. Wt. 1.95 oz. Size: 2.64"x1.77"x0.87" (closed).