The Rolex Steel and White Gold Datejust 31 carries reference 278344RBR . The Datejust introduced the self-winding wristwatch with a date window in 1945, and the date sits under the Cyclops lens at 3 o'clock. Its 31mm case is crafted in Oystersteel and 18k white gold . This steel-and-gold combination is what Rolex calls Rolesor, a signature of the brand since 1933.
Its silver diamond dial has diamond hour markers. It is framed by a domed bezel set with diamonds. The watch is fitted with the three-piece-link Oyster bracelet.
It is powered by the self-winding Rolex caliber 2236 , with roughly 55 hours of power reserve. It is certified as a Superlative Chronometer, Rolex's standard of accuracy within −2/+2 seconds per day once cased. The screw-down crown and sapphire crystal keep it water resistant to 100 meters.
Available now at Diamond Club Jewelry Miami — every timepiece is 100% authenticated by a watchmaker and verified before sale. Price available on request — contact us for current pricing.
Reference
278344RBR
Case
31mm Oystersteel and 18k white gold
Bezel
Domed Diamond Bezel
Dial
Silver Diamond Dial
Caliber
2236, manufacture Rolex
Power reserve
~55 hours
Functions
Hours, minutes, seconds, date
Bracelet / Strap
Oyster Bracelet
Water resistance
100m / 330ft