[caption id="attachment_3346" align="aligncenter" width="584"]Oris Aquis Depth Gauge 73376754154MB Oris Aquis Depth Gauge 73376754154MB[/caption]   The watch pictured above is the awesome Oris Aquis Depth Gauge with a patented mechanical depth gauge based on the Boyle-Mariotte law. Water entering the case via the opening in the glass at 12 causes the channel around the dial to become dark grey. The edge between the dark grey (water) and light grey (compressed air) marks the depth on the yellow scale. Other Swiss-made brands -notably IWC, JlC and Panerai, have made watches with depth gauges, but none did it at the price range of the Oris. For those of you not using the metric system - there is a conversion scale engraved on the caseback! Oris Aquis Depth Gauge Case: stainless steel, ceramic inlay Strap: stainless steel bracelet / rubber strap Diameter: 46mm Movement: Oris 733, automatic. Mechanical depth gauge with Reference number: 73376754154 MB Pricing and more information: www.Ace.am/73376754154MB