it is a chronograph that features a countdown function. The countdown can be set to maximum ten minute, once the countdown is completed, the chronograph will immediate (without any interruption) run in the normal fashion. The case is made of stainless steel in 44mm. Automatic chronograph movement using the US-155, it has 650 components and has a power reserve of 3 days. Column wheel, 28,800BPH and a silicon escapement along with silicon hairspring. Priced at 15,900.00CHF