The Rolex Datejust 126234 features a 36mm case constructed from Oystersteel paired with an 18k white gold fluted bezel (White Rolesor).  

It measures approximately 12mm in thickness with a 44mm lug-to-lug distance and a 20mm lug width.  The watch is water-resistant to 100 meters (330 feet) and utilizes a scratch-resistant sapphire crystal with a Cyclops lens over the date window at 3 o'clock.  It is available with either a five-link Jubilee or three-link Oyster bracelet, both equipped with the Easylink 5mm comfort extension link. 

Movement Specifications (Calibre 3235)

Powering the 126234 is the in-house Rolex Calibre 3235 automatic movement, representing a significant technical evolution over its predecessor.  Key technical specifications include:

• Power Reserve: Approximately 70 hours, allowing the watch to run over a weekend without winding. 

• Frequency: Operates at 28,800 vibrations per hour (4 Hz) with 31 jewels. 

• Escapement: Features the patented Chronergy escapement made from nickel-phosphorus, which is highly efficient and immune to magnetic interference. 

• Resistance: Equipped with a blue Parachrom hairspring (paramagnetic alloy) and high-performance Paraflex shock absorbers for superior resistance to shocks and magnetic fields. 

• Functions: Includes central hour, minute, and seconds hands, an instantaneous date change, and a stop-seconds function for precise time setting.