Depth rating is half the "target" watches, which seems odd.
Apparently the actual WR is the same as the other 39mm Steinhart Subs - 300m. However they put a lower rating on the dial so it looks moar vintage-ish. Which is odd given, as you say, the 200m rating of the original Rolex.
@Dammit started
London Fixed Gear and Single-Speed is a community of fixed gear and single-speed cyclists.
Depth rating is half the "target" watches, which seems odd.