AR 165 et AR 165-2
As a result, this is a movement of 18,000 vibrations. It is equipped with 17 jewels.
Its dimensions are as follows: in height, it has the dimensions of a 16" 1/2 caliber. In width it is one millimetre less, i.e.
37.20 x 36.20 mm. The AR 165-2 version has the balance at 6 o'clock, while the AR 165 has the balance at 12 o'clock.