The Rolex Yacht-Master collection of sports watches was launched in 1992, with ladies' versions being released two years later. The 35mm ladies' models are the larger of the two size options aimed at women, helping them to make a strong visual impact, yet they manage to retain much of the elegance associated with the smaller models. Notable features include a two-directional bezel, allowing complex calculations to be made, a date display window complete with a Cyclops lens, and water resistance for up to 100 meters. Various case materials are available, including two-tone combinations of stainless steel and platinum, and stainless steel and yellow gold.