The Longines Master Collection features exclusively mechanical watches. Most of the watches in this series have an automatic movement, but some hand-wound watches are also available. The Swiss watch manufacturer Longines introduced the series to the market in 2005. The Master Collection pays homage to the company's top achievements and successes, showcasing the pinnacle of this manufacturer's art. The series includes chronographs with a calendar and moon phase display as well as models with four retrograde displays, in which the hand jumps back upon reaching the end of the display. These watches with complications display a second time zone in addition to the date, day, and moon phase, as well as featuring a day/night indicator. Alternatively, there are also streamlined automatic watches with a date or day/date display. This series also offers diamond watches for women.

Longines has been making innovations and setting records since the company was founded in 1832. This includes the world's first quartz watches, which were already reaching peak precision levels in the mid-1950s. For this and other reasons, the Saint-Imier-based manufacturer remains the official timekeeper of various sports to this day. In particular, the company has close ties with equestrian sports. The Equestrian series is dedicated to this field and features design elements reminiscent of stirrups and horseshoes.