Girard-Perregaux | Constant Escapement L.M., Reference 93500, A white gold semi-skeletonised wristwatch with six day linear power reserve indication and constant force escapement, Circa 2013 | 芝柏 | Constant Escapement L.M. 型號93500 白金半鏤空腕錶，備六天直線式動力儲備顯示及恆動擒縱裝置，約2013年製

The Constant Escapement L.M. gains its name from two of the greatest people from Girard-Perregaux - the founder of the manufacturer, Constant Girard-Perregaux and the development leader of the movement, Luigi Macaluso. Extremely delicate and complex, the most interesting part of the movement lies on its constant force escapement, a beautiful butterfly shaped device which ensures a constant power is delivered from the main spring to the balance wheel. Upon activation, the movement regulates in a phenomenal beat, showcasing the rhythm of the manufacturer's masterful watchmaking precision. The present watch is a magnificent horological marvel and was proudly awarded the Timezone watch of the year and the GPHG in 2013.