The Rolex Datejust 36 reference 126234 represents the contemporary expression of one of horology's most quietly influential watches — the watch that introduced the date-at-three complication to the wristwatch in 1945 and has continued to define classical wristwatch design ever since. Released in 2018 as the modern 36mm Datejust 36, the 126234 carries Rolex's in-house Caliber 3235 movement and the White Rolesor construction that pairs Oystersteel with an 18k white gold fluted bezel — a quietly luxurious choice that distinguishes the 126234 from the all-steel 126200 sibling reference. The 36mm Oystersteel Oyster case carries the fluted 18k white gold bezel and is available on either the Oyster bracelet for a sportier wear or the five-link Jubilee bracelet originally designed in 1945 specifically for the very first Datejust. The cyclops-magnified date window at 3 o'clock anchors the design and remains one of the most recognizable details in all of watchmaking. Powered by the in-house Rolex Caliber 3235 self-winding chronometer movement with the patented Chronergy escapement, paramagnetic blue Parachrom hairspring, and a substantial 70-hour power reserve, the 126234 carries Superlative Chronometer certification to -2/+2 seconds per day. Sapphire crystal, screw-down Twinlock crown, 100 meters water resistance. Pre-owned, the modern Datejust 36 reference.