The Favre Leuba 1149 is a notable watch movement that was introduced and used between the years 1941 and 1948. It stands out as the first and only bumper automatic movement specifically designed for ladies' watches during that period. Additionally, it is recognized for its exceptional thinness, making it a remarkable achievement in the field of mechanical watch movements. The movement functions with an automatic (bumper) mechanism, providing convenience and ease of use.