Rolex is a Swiss luxury watch manufacturer founded in 1905, producing watches across a range of professional and dress categories. Core collections include the Submariner as a professional dive watch, the GMT-Master II for dual-timezone tracking, the Daytona as a motorsport chronograph, the Datejust as Rolex's long-running dress watch, and the Explorer. Rolex manufactures its own movements, cases, and bracelets in-house at its Geneva facilities. References are available in Oystersteel, white gold, yellow gold, Everose gold, and two-tone combinations.