Reference 278341RBR is the Rolex Steel and Everose Gold Datejust 31. 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. The 31mm case is made of Oystersteel and 18k Everose gold . Rolex has combined steel and gold this way since 1933 and calls it Rolesor.
The white Roman dial uses Roman numerals. Around the dial sits a bezel set with brilliant-cut 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
278341RBR
Case
31mm Oystersteel and 18k Everose gold
Bezel
Diamond Bezel
Dial
White Roman Dial
Caliber
2236, manufacture Rolex
Power reserve
~55 hours
Functions
Hours, minutes, seconds, date
Bracelet / Strap
Oyster Bracelet
Water resistance
100m / 330ft