EEM is proud to announce that Longines will become the official title partner of the Longines Masters series on three continents. (Photo courtesy of EEM) American Leg Will Kick Off the 2015/2016 Longines Masters Series as the World’s Best Show Jumpers Converge in Los Angeles October 1 st  to 4 th to Compete for Over $1 Million LOS ANGELES, CA (June 24, 2015) – EEM is proud to announce that the Swiss watchmaker Longines will become the official title partner of the Longines Masters series on three continents, with elite equestrian events in Europe, Asia and America.