The movement is regulated within a -3/+5 seconds a day range (within COSC standards) and comes with a 10-year warranty and 10-year recommended service intervals. Thus, the impact of magnetic fields on the movement is reduced by more than 90%. Beating at 4Hz, its regulating organ uses silicon for the anchor and escape wheel, along with non-ferrous material for the axes, escape wheel and anchor. The large, powerful Calibre 400 is equipped with two barrels offering a robust 120-hour or 5-day power reserve. Under the see-through sapphire caseback is the brand’s new standard automatic movement. Either way, both options are equipped with a security folding clasp with diver’s extension, as well as Oris’ Quick Strap Change system allowing to swap between strap and bracelet without tool. Originally offered in a relatively large case of 43.5mm, followed by a 39.5mm edition, last year, the brand from Holstein decided to add an intermediate size, with a 41.5mm diameter – a size that will fit most wrists.Īll three colourways are available on a 3-link, brushed and polished stainless steel bracelet or a black rubber strap. A watch that has been in the collection for many years, it was revamped in 2017 with a slightly more refined and modernised design.

The Aquis Date remains almost identical visually.

And now, for 2021, it finds its way in a more compact edition of this watch inside the Aquis Date Calibre 400 41.5mm Collection, in three different colours.Īt first, not much appears to have changed with these new models. This engine, the Calibre 400, was first introduced in late 2020 into the larger 43.5mm edition of the Aquis. Yet, Oris had different plans and recently introduced a manufacture movement to offer watch enthusiasts more power, higher accuracy, more reliability and magnetic resistance. A modern, robust and well-equipped dive watch, it has long been available with an outsourced automatic movement by Sellita.

The Aquis is, without doubt, one of the most accomplished and acclaimed collections by Oris.

Oris aquis date calibre 400 41.5