The Oyster bracelet is a metal bracelet defined by its three-piece flat link layout: one wide centre link flanked by two narrower outer links. Rolex patented the design in 1947 and launched it in 1948, though its roots reach back to the bonklip-style bands Gay Frères made for Rolex in the 1930s and 1940s (Rolex bought Gay Frères outright in 1998). Construction evolved over decades, from riveted links (hollow, with rivets visible on the sides) to folded links and finally to solid links milled from blocks of steel. That solidity, plus the clean, symmetrical look, is what separates the Oyster from the five-link, more jewellery-like Jubilee.
The clearest examples today sit across Rolex's sport range. The Submariner Date (ref. 126610LN, calibre 3235, around £9,000 at UK retail) and the GMT-Master II (ref. 126710BLNR 'Batman,' roughly £9,500 at retail but usually well above that on the secondary market) both ship on an Oyster, with the GMT also offered on a Jubilee. These bracelets are Oystersteel, part of the 904L steel family. At the clasp, the Oysterlock folding safety catch guards against accidental opening, while Glidelock lets you fine-tune the fit without tools, even over a dive suit. Lower down the ladder, Tudor's Black Bay offers Oyster-style three-link bracelets, including riveted-look versions; the Black Bay 36, for instance, tapers from 19mm down to 16mm at the clasp.
When buying, look first at link construction: solid links feel heavier, rattle less and last longer than folded or hollow ones. On vintage Rolex pieces, check for stretch, the sag that comes from worn link pins. At the clasp, Glidelock or at least Easylink (the 5mm comfort extension Rolex added in 2013) makes a real difference on hot days when your wrist swells. The Oyster's flat surfaces show scratches more readily than a Jubilee, but that planted, substantial feel is precisely the appeal for most wearers.
Who is it for? The one-watch collector who wants something that goes from desk to dive without fuss, and who prefers a clean, durable look over sparkle. If you want dressier light play, a Jubilee may suit better, but on a sport diver or GMT the Oyster keeps the original character and supports resale. With aftermarket Oysters, end-link fit and clasp quality matter most; cheap copies tend to rattle and sit loose.