Oris Aquis Date Yangtze Jiangtun Limited Edition 43.5 mm Blue-Green Mother-of-Pearl Dial Bracelet [01 733 7789 4197-SET]

The Oris Aquis Date Yangtze Jiangtun Limited Edition 01 733 7789 4197-SET combines the professional capability of the Aquis Date with a meaningful conservation story. Created in partnership with the Changjiang Conservation Foundation, the watch supports efforts to protect the critically endangered Yangtze finless porpoise and restore its natural river habitat. Production is limited to 1,249 individually numbered pieces, reflecting the porpoise population count cited by the conservation project.

Its remarkable blue-green dial begins with a genuine mother-of-pearl base that captures the shifting colours and reflections of the Yangtze River. A precisely applied blue-green layer allows iridescent wave-like lines to remain visible across the surface. These flowing patterns are inspired by the ultrasonic clicks used by the finless porpoise for communication and echolocation in the river’s cloudy waters. Applied indexes and the hour, minute and lollipop seconds hands are filled with Super-LumiNova, while a clearly defined date window is positioned at 6 o’clock.

The brushed and polished 43.5 mm stainless-steel case is fitted with a unidirectional rotating bezel and a dark grey tungsten minutes-scale insert. Tungsten provides a distinctive metallic appearance while offering excellent resistance to scratching and everyday wear. A screw-down crown with protective guards, double-domed sapphire crystal with internal anti-reflective coating and water resistance to 300 metres give the watch the genuine capability expected of an Aquis diving instrument.

Inside is the automatic Oris Calibre 733-1, operating at 28,800 vibrations per hour and providing approximately 41 hours of power reserve. Its practical functions include central hours, minutes and seconds, an instantaneous date display, rapid date correction and stop-seconds for precise time setting. The movement is protected by a solid screw-down caseback featuring a relief engraving of the Yangtze finless porpoise and the watch’s individual limited-edition number.

A brushed and polished stainless-steel bracelet completes the substantial Aquis profile. Its security folding clasp incorporates a diver’s extension, allowing the watch to be adjusted when worn over diving equipment. Combining professional specifications, an exceptionally expressive dial and a genuine environmental purpose, the Yangtze Jiangtun Limited Edition is both a capable dive watch and a compelling collector’s piece.

TECHNICAL SPECIFICATIONS

• Brand: Oris
• Collection: Aquis Date
• Model: 01 733 7789 4197-SET
• Edition: Limited to 1,249 Individually Numbered Pieces
• Manufacture: Swiss Made
• Movement Type: Swiss Mechanical Automatic
• Calibre: Oris 733-1
• Base Movement: Sellita SW200-1
• Power Reserve: Approximately 41 Hours
• Frequency: 28,800 Vibrations per Hour / 4 Hz
• Jewels: 26
• Functions: Hours, Minutes, Central Seconds, Instantaneous Date, Date Corrector and Stop-Seconds
• Case Material: Brushed and Polished Multi-Piece Stainless Steel
• Case Diameter: 43.50 mm
• Case Thickness: Approximately 13.10 mm
• Lug-to-Lug Length: Approximately 51 mm
• Crystal: Double-Domed Sapphire Crystal
• Crystal Coating: Anti-Reflective Coating on the Interior
• Crown: Screw-Down Crown with Protective Crown Guards
• Bezel: Unidirectional Rotating Dive Bezel
• Bezel Insert: Dark Grey Tungsten Minutes-Scale Top Ring
• Case Back: Solid Screw-Down Stainless-Steel Caseback with Porpoise Engraving and Limited-Edition Number
• Dial Colour: Blue-Green
• Dial Material: Mother-of-Pearl
• Dial Design: Iridescent Wave Pattern Inspired by the Porpoise’s Ultrasonic Echolocation Clicks
• Hour Markers: Applied Indexes with Super-LumiNova
• Hands: Luminous Hour and Minute Hands with Lollipop Seconds Hand
• Date Display: Window at 6 o’clock
• Bracelet: Brushed and Polished Stainless Steel
• Clasp: Security Folding Clasp with Diver’s Extension
• Interhorn Width: 23 mm
• Water Resistance: 30 Bar / 300 Metres / 1,000 Feet

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