he development of ultra slim watches is one of the particular strengths and the brand essence of Jean Marcel. The new Optimum collection also follows this tradition. The automatic watches, with a total thickness of only 7.5 mm, are among the slimmest three-hand automatic watches of our time.

With a case diameter of 40 millimetres, the timepieces fit harmoniously on the wrist. The Optimum is water-resistant up to 5 ATM and equipped with 2 sapphire crystals. The super-slim dressers also have a date indication, which has been innovatively implemented on the left half of the dial.

The base calibre is 11 ½ ETA 2892A2 Top in a special “réduit” version with a shortened hand height. The elaborately finished calibre can be seen through the sapphire crystal case back. The Optimum Curved comes in three dial versions. The colours are ocean blue, slate grey and emerald green.

With the new Optimum Curved Up collection, Jean Marcel is also introducing a new standard of quality and precision, focused on the precision of the movements. The internal specifications of this precision standard are stricter than the requirements of the official chronometer testing institute COSC.

Only watches with an average daily deviation in the range of 0 to +4 seconds are certified with the Ultimate Precision seal. In addition, the amplitude must be at least 270° and the beat error must not exceed 0.7ms.

Every buyer receives a hand-signed certificate with his watch, documenting not only the average daily rate, but also the determined values for amplitude and beat error.