The 126610 is powered by the Rolex Caliber 3235, a self-winding mechanical movement developed and manufactured entirely by Rolex.  It represents a significant upgrade over the previous Caliber 3135. 

• Power Reserve: Approximately 70 hours (up from 48 hours), allowing the watch to keep running over a weekend if not worn. 

• Precision: Certified as a Superlative Chronometer, guaranteeing an accuracy of -2/+2 seconds per day after casing. 

• Frequency: 28,800 vibrations per hour (4 Hz). 

• Jewels: 31.

• Key Technologies:

  • Chronergy Escapement: Made of nickel-phosphorus, it is highly efficient and insensitive to magnetic interference.

  • Parachrom Hairspring: A paramagnetic blue alloy that is up to 10 times more shock-resistant than a traditional hairspring.

  • Paraflex Shock Absorbers: High-performance shock absorbers increasing resistance to impacts. 

• Functions: Center hour, minute, and seconds hands; instantaneous date with rapid setting; stop-seconds for precise time setting. 

Case Material: Oystersteel (904L steel). 

Bezel: Unidirectional rotatable 60-minute graduated bezel with a scratch-resistant Cerachrom insert in ceramic.

126610LN: Black ceramic insert with platinum-coated graduations.

Crystal: Scratch-resistant sapphire with a Cyclops lens over the date. 

Water Resistance: Waterproof to 300 meters (1,000 feet) via the Triplock triple waterproofness system on the screw-down crown. 

Bracelet: Oyster bracelet with three-piece solid links, featuring the Glidelock extension system (adjustable in 2mm increments up to 20mm) and a Fliplock extension link for wearing over a wetsuit. 

Luminescence: Chromalight display with long-lasting blue luminescence on hands and hour markers.