The fluororubber strap sits close to the Santos case instead of continuing it as a row of metal links. That gives the large square watch a cleaner transition into casual clothing, particularly where a full bracelet would feel too dressy. The gold-tone bezel remains visible against the white dial, so the strap does not erase the two-tone identity.
Both W2SA0009 pages share a reference but own different wearing decisions. The bracelet version carries the square geometry around the wrist and gives the clasp a more formal role. This page keeps the case and date visible while placing comfort and a relaxed strap line first. The comparison is practical, not a claim that one construction is inherently better.