Back into the deepKnown affectionately as ‘the watch with a hole’, the Aquis Depth Gauge uses the scientific principles of the Boyle-Mariotte Law to create a gauge that clearly measures depth during a dive. The patented system works by allowing water through a hole cutin to the sapphire crystal at 12 o’clock and into a channel milled around the outer edge of the crystal. This creates a watermark that corresponds to a gauge clearly indicated in yellow on the dial.The new model captures and refines the spirit and functional ity of the original, delivering even higher performance when it really matters deep below the ocean surface. REFERENCE 01 733 7755 4154-Set MBCASE Aquis, 45.80 mm, Stainless steelMATERIAL Multi-piece stainless steel case, ceramic minutes scale top ringSIZE 45.80 mmTOP GLASS Sapphire, domed on both sides, double-sided anti-reflective coatingCASE BACK Stainless steel, special engravings, screwedOPERATING DEVICES Stainless steel crownWATER RESISTANCE 50 barINTERHORN WIDTH 24 mmMOVEMENT Automatic winding dateNUMBER Oris 733, base SW 200-1DIMENSIONS Ø 25.60 mm, 11 1/2’’’FUNCTIONS Centre hands for hours, minutes and seconds, date window, instantaneous date, date corrector, fine timing device and stop-secondWINDING Automatic windingPOWER-RESERVE 38 hrsVIBRATIONS 28’800 A/h, 4 HzJEWELS 26DIAL BlackMATERIAL Black dialLUMINOUS MATERIAL Indices and hands Superluminova BG W9STRAP/BRACELET Stainless steelMATERIAL Multi-piece stainless steel metal bracelet, security folding clasp with extension