The Explorer II started its release in 1971. Just like its older sibling, the Explorer I, the Explorer II was a steel tool watch but bigger and more outspoken. 

This Explorer II Polar is from 1999 production date. The case comes with lugholes and it has the "Swiss only" luminova dial. The bracelet is in good condition with some minimal stretch, contains 12 links for a wrist up to 20cm. 3 months warranty