Powered by Rolex's caliber 2236 automatic movement with its distinctive Syloxi hairspring, the Rolex Datejust 278383RBR delivers 55 hours of power reserve within its 31mm yellow gold case—a technical achievement that positions this reference among the most refined expressions of contemporary horological engineering. The mother-of-pearl dial foundation showcases ten diamond hour markers, creating depth and luminosity that shifts with ambient light conditions. Diamond-set bezels on Datejust references represent Rolex's commitment to gem-setting excellence, with each stone precisely calibrated for maximum brilliance. This unworn example demonstrates the meticulous attention to detail that defines the modern Datejust collection's approach to luxury sports watch design.

Key Features & Specifications

• Caliber 2236 Movement — Swiss automatic movement with Syloxi hairspring and 55-hour power reserve, featuring Rolex's proprietary paramagnetic blue Parachrom hairspring technology
• 31mm Yellow Gold Case — Solid 18ct yellow gold construction with Oystersteel caseback, waterproof to 100 meters with screw-down Twinlock crown system
• Diamond-Set Bezel — Factory-set brilliant-cut diamonds in white gold settings, each stone individually selected and positioned for optimal light refraction
• Mother-of-Pearl Diamond Dial — Natural white mother-of-pearl base with ten diamond hour markers at 1, 2, 4, 5, 7, 8, 10, and 11 o'clock positions
• Jubilee Bracelet — Five-piece link construction in yellow gold and Oystersteel with Oysterclasp and Easylink 5mm comfort extension system
• Sapphire Crystal — Scratch-resistant sapphire crystal with anti-reflective coating and Cyclops lens magnifying the date display at 3 o'clock
• Unworn Condition — Factory-fresh timepiece with original protective films, representing optimal collectible status for reference 278383RBR

About This Timepiece

• Bracelet Sizing — Complimentary bracelet sizing included with every purchase. Contact us with your wrist measurement and we'll have it ready before shipping.
• Authenticity Guarantee — Every watch is thoroughly inspected and authenticated by our team of certified horologists. 100% authentic, guaranteed.
• Warranty — New model watches include a 1-year mechanical warranty covering manufacturing defects. All watches include our confidence guarantee.
• Shipping — Free insured overnight FedEx shipping on all orders. Fully insured, signature required, discreet packaging.

Contact Us

Questions about this timepiece? Our specialists are available to help.
Phone/Text: (310) 363-0481
Email: chris@chronocandy.com

Chrono Candy is an independent luxury watch dealer and is not affiliated with Rolex S.A., Rolex USA, Patek Philippe, Audemars Piguet, Cartier, Omega, Tudor, or any brands listed.