IWC Schaffhausen Aquatimer Deep Three

The mechanical depth gauge is the technical highlight of the Aquatimer Deep Three, which is pressure-resistant to 10 bar. The pressure-metering system is housed in a large second crown on the left-hand side of the case, protected by a bow. Water pressure acts directly on a mem-brane in the crown and pushes a pin towards the interior of the case. This movement operates the lever system that integrates the two indicators. During a dive, the blue depth indicator moves with increasing or decreasing depth across the white scale and always shows current depth. With the help of the seconds hand and the depth gauge, it is pos¬sible to keep ascent speed to a maximum of 10 metres per minute. The red indicator remains at the deepest point at¬tained during the dive, to a maximum of 50 metres. This figure is vital for calculating any necessary decompression stops and, together with the other data, gives the experi¬enced diver all the information he needs to complete the dive safely.

Thanks to its titanium case, the Aquatimer Deep Three is lighter than its predecessor in stainless steel. This is despite the watch’s diameter, which at 46 millimetres remains un-changed, and the addition of two new functional elements on the right-hand side. The reliable 30120-calibre automatic movement with date display comes with a useful 42-hour power reserve.