Louis Moinet LM54

LM54 is an automatic monopusher chronograph movement manufactured by Louis Moinet. It comprises 302 parts with 34 jewels, beats at 28,800 bph, and delivers a 48-hour power reserve within a 30.40mm diameter and 8.90mm height. The movement features a visible chronograph mechanism mounted on a dedicated plate, distinguishing it from conventional chronograph constructions. Introduced in 2016, it remains in production and powers watches in the Memoris collection.