Royal Jewelers is an authorized Oris dealer in the Boston area and offers the Oris Aquis Date Calibre 400 with Oris's 10 year warranty.

Oris’s engineers developed Calibre 400 to meet the demands of today’s watch wearer. It makes three key performance promises. Calibre 400 has more than 30 anti-magnetic components and exceeds the norms required by the ISO 764 enhanced anti-magnetic standard. For many reasons, you may not wear a mechanical watch every day. Calibre 400 has a five-day power reserve so it’s ready to go when you are.

Oris is one of a small handful of Swiss watch brands that makes only mechanical watches. A mechanical watch is a thing of beauty, designed according to principles that have been around for generations and will continue long into the future. Oris is constantly striving to make better watches that offer beautiful, innovative functions and advanced performance levels. For example, the in-house developed Calibre 400 Series of Swiss Made automatics promises a five-day power reserve, anti-magnetism and a 10-year warranty and 10-year recommended service intervals.