Silva Terra Expedition S Sustainable Compass Used Snorkels Protective: Internal frame structure is

Protective:  Internal frame structure is designed to rebound and be shock-absorbent

High performance pneumatically balanced lever operated poppet valve

A pressure gauge that is compact and reliable makes for easy diving

O-rings: Dual Silicone O-rings

Silva Terra Expedition S Sustainable Compass Used Snorkels Protective: Internal frame structure isThe Silva Terra Expedition S is your preferred choice if you need a mirror sighting compass with many features. It is high performing when it comes to accuracy, precision, and durability and is developed for experienced users and professionals. Silva Terra Expedition S features easy handling housing, silicon rubber feet for precision map work, detachable safety release scale lanyard, night enabling luminous markings, magnifying lens, map measuring