Diver's 200 m with Data Transfer System
DON'T OPEN! SERVICE CENTER REPAIR ONLY
Trust this hint if you are planning to take the watch to the bottom of the Ocean. If you are a "desktop diver" like me, that occasionally might take the watch for a swim or snorkeling, then you are probably safe doing the battery change yourself. I normally invest a new gasket ring and a bit of silicone after each battery change.
D202 is the movement number, followed by the case number. 5N1361 suggests that this watch was produced in November 1995 (just look at the first two digits).