An athlete collaboration usually shows up as a caseback engraving and nothing else, so it's worth noting that ref. L38354912 actually changes the spec sheet: the blue dial is matched to a woven synthetic strap instead of the steel bracelet used across the rest of the 42mm chronograph family. Same automatic movement, same 100m water resistance, same chronograph function — the strap swap is the whole story here, and it's a smart one, since a technical textile strap suits an alpine-skiing tie-in far more credibly than polished steel links would. A small change, but it's the kind of detail my scoring actually rewards over a bare logo swap.