The Oris Diving Aquis Date Caliber 400 41.5mm 01 400 7769 6355-07 8 22 09PEB is a high-quality and elegantly designed diver's watch. The housing is made of robust stainless steel and has a round shape. The diameter is 41.5mm and the watch is water resistant up to 300m. The bezel is made of ceramic and 18k gold and features a rotating minute scale. The bottom of the case is screwed and made of a transparent back. The watch glass is made of sapphire glass, curved on both sides and anti-reflective on the inside. Functionality-Plain 3-Hand Movement-Automatic