A helium valve is integrated into the housing so that this clock especially useful in long deep dives. And the model has a water resistant to 600 meters in genuine currency. The advanced design of unidirectional bezel new medal, which is easy prey underwater. If you click on the handle, and did as they make their way around the sphere. And the markings are legible. The clock uses a sapphire crystal, anti-reflective coating that provides excellent performance and who has maintained zero. As in the case came to 45.5 mm, the numbering space is very large. And large needles and a boom for good visibility. The date window is at 3:00 pm, without a magnifying glass, it is easy to read. The stainless steel bracelet is well made, thick and heavy. The upper and lower band has a polished finish and polished sides. Pin bearings are used in