Rolex Datejust Steel — Diamond Bezel White Roman Dial | Ref. 126284RBR

Reference 126284RBR places the Datejust 36 in a configuration that balances sporting steel with jewellery-grade decoration: a factory diamond-set bezel paired with a white dial bearing Roman numeral hour markers. The 126xxx generation of the Datejust 36 was launched in 2016, introducing Calibre 3235, an Oyster bracelet with updated Oysterclasp, and a refined case geometry with shorter lugs. The suffix 'RBR' denotes the diamond Rolesor bezel setting, where individually selected diamonds are set in a continuous pavé formation around the bezel perimeter — a configuration that demands precise stone matching for consistent brilliance.

Calibre 3235 — introduced with this generation — is among Rolex's most technically accomplished self-winding movements. It features a Chronergy escapement that improves energy efficiency by approximately 15 percent over the previous Calibre 3135, a Parachrom hairspring, and a power reserve extended to 70 hours. The movement's bidirectional Perpetual rotor and seven patents underpinning the escapement design represent meaningful advances over the prior generation. The Jubilee bracelet or Oyster bracelet may accompany this reference depending on configuration, with the Oysterclasp providing tool-free adjustment for a precise fit.

Diamond bezel Datejust references on steel cases appeal to a broad collector base precisely because they offer precious stone setting without the price premium of a full gold case. The Roman numeral dial adds legibility and a slightly formal aesthetic that offsets the sportier steel case material. As a factory-original configuration rather than an aftermarket modification, the 126284RBR commands a meaningfully different market position than after-sales diamond-set pieces, with authentication and provenance unambiguous.