Oris Aquis Date Calibre 400 43.50 mm Great Barrier Reef Limited Edition IV Gradient Blue Dial Stainless Steel Bracelet [01-400-7790-4185-Set]

The Oris Aquis Date Calibre 400 43.50 mm Great Barrier Reef Limited Edition IV represents the perfect convergence of Swiss horological mastery and environmental consciousness. Crafted as the fourth collaboration between Oris and the Reef Restoration Foundation, this timepiece embodies the brand’s commitment to ocean preservation while achieving a new level of aesthetic sophistication.

The watch’s 43.50 mm stainless-steel case, complemented by a ceramic minutes-scale top ring, offers bold proportions and timeless finishing. Its gradient blue dial, fading from a deep marine blue to a lighter azure, captures the shifting hues of coral-reef waters. Applied luminous hour markers and polished hands ensure exceptional visibility, while the discreet date window at 6 o’clock preserves the dial’s balance.

At the core lies the in-house Oris Calibre 400 — a revolutionary movement boasting a 120-hour (five-day) power reserve, enhanced anti-magnetic protection, and a service interval designed for long-term reliability. Engineered for real-world endurance, this masterpiece achieves 30 bar (300 m / 1,000 ft) water resistance through its screw-down crown and solid case architecture.

The integrated stainless-steel bracelet combines brushed and polished surfaces for a refined yet rugged presence. Each piece is individually numbered, underscoring its exclusivity as part of a limited production of 2,000 pieces.

More than a precision instrument, this special edition serves as a symbol of responsibility and style — a luxury diver’s watch with genuine purpose beneath its brilliance.

Technical Specifications

• Model Number: 01-400-7790-4185-Set

• Edition: Great Barrier Reef Limited Edition IV (2,000 pieces)

• Case Diameter: 43.50 mm

• Case Material: Multi-piece Stainless Steel with Ceramic Minutes-Scale Top Ring

• Crystal: Sapphire, domed on both sides with anti-reflective coating inside

• Movement: Swiss Automatic (In-House Calibre 400) ~ 120-Hour Power Reserve, High Anti-Magnetic Resistance

• Dial Colour: Gradient Blue (Sunburst Finish)

• Indexes: Applied Hour Markers with Super-LumiNova®

• Bracelet: Stainless Steel Bracelet with Folding Clasp

• Water Resistance: 30 bar / 300 m / 1,000 ft

• Warranty: 2 Years International (extendable to 10 years with registration)

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