What grade is Jaeger-LeCoultre 939 movement?

High-end sports Jaeger-LeCoultre 939 is a high-end sport. Jaeger-LeCoultre invented 123 1 movement and obtained 398 registered patents. Jaeger-LeCoultre is an advanced watch manufacturer located in Leshan Street, Switzerland. Since 1833 was founded in Jura Valley, Switzerland, Jaeger-LeCoultre has become an important watch brand in the history of watchmaking. As a pioneer of the top watchmaking industry, Jaeger-LeCoultre not only perfectly combines accurate timing technology with exquisite artistic talent, but also makes outstanding contributions to the development of the whole watchmaking industry, constantly surpassing itself and making continuous achievements, becoming a model of the advanced watchmaking industry.