The Rolex Yacht-Master II (Reference 116680) is a highly specialized, 44mm stainless steel regatta chronograph engineered for professional sailors. Distinctive for its massive wrist presence and complex mechanics, this specific reference was produced between 2013 and 2024 before Rolex briefly discontinued the original configuration.

• Case & Size: 44mm Oyster case crafted from 904L stainless steel. It features a screw-down Triplock crown providing 100 meters (330 feet) of water resistance. 

• Bezel: A blue Cerachrom ceramic Ring Command bezel. On this reference, the bezel acts as a mechanical switch linked directly to the movement, allowing the wearer to program the countdown timer.

• Dial: A crisp matte white dial featuring high-contrast blue lacquer accents and a small seconds sub-dial at 6 o’clock. 

• Luminescence: Blue Chromalight lume fills the markers. Note that models produced after 2017 feature a triangular marker at 12 o'clock, a rectangular marker at 6 o'clock, and Mercedes-style hands. Pre-2017 versions feature straight hands and square block markers. 

• Movement: Powered by the Rolex In-House Caliber 4161 automatic movement, which boasts a 72-hour power reserve.

• The standout complication of the 116680 is the programmable countdown timer with a mechanical memory and on-the-fly flyback synchronization. By rotating the Ring Command bezel 90 degrees, you lock the movement into programming mode. You can then use the crown to set a custom countdown duration anywhere from 1 to 10 minutes, matching the official starting sequence of a yacht race.