The first Rolex was launched on the market in 1945. Since then, the watch has gained high regard among collectors for its enduring style and reliable reading. With over seventy years of production behind it, it should come as no surprise that Datejust has seen its fair share of updates. The reference. 116233 is an excellent example of this, as it features a design that closely resembles the original series, but also incorporates several modern amenities. The reference. 116233 features a 36mm waterproof Oyster case, now flanked by polished protrusions. The case also features a sapphire crystal, an engraved flange and a waterproof Twinlock threaded crown.