In 2014, timed for the company’s 175th anniversary, Patek Philippe presented a quantum leap in the domain of acoustic complications with the launch of the Ref. 5175 Grandmaster Chime, a double-faced wristwatch. This was the first Patek Philippe wristwatch with a grande sonnerie and the manufacture’s most complicated wristwatch to date. This Grand Complication became part of the regular collection in 2016 with the Grand Master Chime Ref. 6300.