Oris Aquis Date Calibre 400 – In-House Automatic Diver Swiss Made · Professional Tool Watch · Calibre 400 Series This Oris Aquis Date Calibre 400 is a modern Swiss luxury dive watch and one of the most important milestones in Oris’ independent watchmaking history. It is powered by the in-house Calibre 400, a future-proof automatic movement developed to deliver exceptional reliability, high anti-magnetism, and long-term durability. Oris refers to this platform as “The New Standard”, and it truly sets a benchmark in contemporary mechanical watchmaking. The watch is housed in a 41.5 mm multi-piece stainless steel case, engineered as a genuine professional diving instrument. It features a unidirectional rotating bezel with a ceramic minutes scale top ring, a screw-down crown, and a domed sapphire crystal with anti-reflective coating on the inside. The screwed stainless steel case back is fitted with a sapphire exhibition window, allowing a clear view of the Calibre 400 movement. Water resistance is rated at 30 bar (300 metres), making it suitable for serious underwater use as well as daily wear. The green dial is clean, modern, and highly legible, with luminous hands and markers designed for low-light conditions. The watch is fitted with a stainless steel three-link bracelet, offering excellent comfort, durability, and a balanced tool-watch aesthetic. Technical Details – Case: Multi-piece stainless steel case – Case Diameter: 41.50 mm – Bezel: Unidirectional rotating bezel with ceramic minutes scale – Crystal: Sapphire, domed on both sides, anti-reflective coating inside – Case Back: Stainless steel, screwed, sapphire exhibition glass – Crown: Screw-down – Water Resistance: 30 bar / 300 metres – Dial: Green – Strap: Stainless steel bracelet – Interhorn Width: 22 mm Movement Details – Calibre: Oris Calibre 400 (In-House) – Winding: Automatic – Functions: Hours, minutes, central seconds, date with instantaneous change – Power Reserve: 120 hours (5 days) – Frequency: 28,800 A/h (4 Hz) – Features: Fine timing device, stop-seconds, high anti-magnetic construction Condition & комплект – Condition: Unworn – Box & Papers: Full set – Warranty: 2 years international Oris warranty Story & Heritage With the launch of the Calibre 400 Series, Oris made a decisive statement as one of the few truly independent Swiss manufacturers capable of producing advanced in-house movements. Designed for longevity, accuracy, and resistance to modern environmental challenges, Calibre 400 offers extended service intervals and outstanding autonomy. Combined with the proven Aquis dive-watch architecture, this model represents Oris at its strongest—functional, innovative, and focused on real performance rather than trends. Express Delivery Via UPS Express Internal Reference Number - ORS-07