The goal was to design a highly efficient and robust movement, according to Beat Fischli, COO of Oris, who developed the new caliber with his team.

This automatic movement was redesigned from the bottom up and every detail was put to the test. Oris developed the Caliber 400 movement in-house and tailored it exactly to match the character of Oris timepieces and the demands of its customers. The Swiss brand chose the Aquis for the premiere of its new in-house base caliber. Because it’s important to Oris to offer good watches at affordable prices, Caliber 400 will not replace existing standard movements, but complement them, and it won’t drive up the prices of the models equipped with it. In addition to the in-house hand-wound caliber series 110 to 115, new in-house automatic Caliber 400 will join the series movements from major suppliers like Sellita.

With its unique architecture - which does not include any of the “High-Mech” trademarks (like the red segment on the winding rotor) for which the Oris movements are known – it is clearly something new. It’s clearly visible through the transparent threaded caseback. It’s a rather discreet way to show the innovation in the Aquis Date that Oris calls “revolutionary” - modern Calibre 400. On the lower portion of the dial, a second glance reveals the power-reserve indication of “5 DAYS,” just below the “30BAR/300M” pressure-resistance indication.

This, along with the brightly glowing Super-LumiNova-coated hour markers and hands, is designed for safe diving. The grooved ring ratchets in half-minute increments and has a dark blue, scratch-resistant ceramic inlay. Surrounding it is the unidirectional rotating bezel that identifies the Aquis Date as a functional dive watch. Immediately apparent is the well-known gradient dial that gradually changes from bright blue in the center to almost black at the edge.

It’s not immediately clear what awaits you inside. It debutted in the modern Aquis Date dive watch, a timepiece that represents the essence of the brand, which we revisit today in our latest visit to the WatchTime Archives in the story below from Fall 2021.Īt first glance it looks like a “perfectly normal” Oris Aquis Date. The movement, the Calibre 400, further runs five days and offers increased antimagnetic protection. After a development period of five years, Oris launched its new in-house movement with 10-year recommended service intervals and a 10-year warranty.

Oris aquis date calibre 400 green