Jaeger-LeCoultre 8 Days

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Jaeger-LeCoultre Reverso Grande Date (back)
© Jaeger-LeCoultre

Jaeger-LeCoultre has produced long-reserve watch movements since 1919, culminating with the 8 Days series of watches introduced in the 2000's.

History

The first 8-day power reserve Jaeger-LeCoultre watch was introduced in 1919. Calibre 144 measured 38.35mm in diameter and was used in a number of pocket watches. In 1928, Jaeger-LeCoultre introduced Calibre 134, an 8-day alarm movement measuring 27.07 mm in diameter. A minute repeater was introduced the next year, measuring 29.33 mm in diameter.

In 1931, Jaeger-LeCoultre introduced the most famous classic 8 day movement, Calibre 124. It was a rectangular movement measuring 27.07 mm by 20.30 mm and it set the stage for the modern series of movements. This was the template used by the Jaeger-LeCoultre team when they started developing an 8 days movement for the Jaeger-LeCoultre Reverso Septantieme in 1997.

Reverso 8 Days

To celebrate the company's 70th birthday in 2002, Jaeger-LeCoultre introduced the Jaeger-LeCoultre Reverso Septantième, featuring the all-new Calibre 879. This was a major advancement over Calibre 124, with nearly every component changed but the original design retained. The movement was designed with some flexibility in mind, and a family of 8 day Reverso models soon followed.

Master Eight Days

Jaeger-LeCoultre Master Eight Days Perpetual SQ Platinum
© Jaeger-LeCoultre

Jaeger-LeCoultre later created a round version of the 8 days movement for the Master series of watches.