HARRY WINSTON – Ocean Tourbillon GMT Worldtimer

Key Highlights

• Limited edition of five pieces in 18K white gold, reference OCEATG46WW002
• 46mm case set with 66 baguette-cut diamonds and 78 baguette-cut blue sapphires using Harry Winston’s signature invisible setting on curved 3D surfaces
• Caliber HW1005 automatic tourbillon with GMT complication and 110-hour power reserve
• Dial hosts 185 baguette-cut diamonds and 35 baguette-cut blue sapphires across three excentered counters on a blue ruthenium crystal base
• Blue alligator strap with an 18K white gold ardillon buckle set with 24 baguette-cut diamonds

A New Expression Within the Ocean Collection

Harry Winston‘s Ocean Collection has long served as the House’s arena for its most technically ambitious watchmaking. Characterised by asymmetric gold cases and excentered dial architecture, the collection provides an ideal setting for the genre’s most storied complications. The new Ocean Tourbillon GMT Worldtimer does not simply continue that tradition — it sharpens it with a white diamond and blue sapphire palette that places high jewellery centre stage without sacrificing a single degree of mechanical rigour.

At 46mm in 18K white gold, the case is imposing but purposeful. The asymmetric design channels the sporty confidence the Ocean Collection has always embodied, while the sapphire crystal caseback opens a view onto Caliber HW1005 and its white gold rotor. Circular Côtes de Genève, black DLC treatment, circular-grained gear trains, and hand-chamfered edges confirm that the movement receives the same considered attention as the exterior. The 110-hour power reserve makes this a watch for sustained travel — an appropriate ambition for a piece built around a GMT complication.

The Invisible Setting on Three Dimensions

Harry Winston’s invisible setting is, by any informed assessment, among the most demanding gem-setting disciplines practised today. The technique achieves a continuous surface of stones with no visible metal support between them. Its application to flat surfaces already demands exceptional precision. On the Ocean Tourbillon GMT Worldtimer, the House has extended it across the curved volumes of the bezel and case sides — a genuinely different proposition that requires accuracy calibrated to fractions of a millimetre.

Viewed directly from above, the bezel and lugs present 66 baguette-cut diamonds in a uniform blaze. Tilt the watch and a second register of 78 baguette-cut blue sapphires emerges beneath, nestled into the lower half of the bezel and the case flanks. This double-deck construction is rare in watchmaking and serves as a direct tribute to the jewellery legacy of Harry Winston New York. The total gem-setting across the entire piece — case, dial, and buckle combined — amounts to 275 baguette-cut diamonds (approximately 11.95 carats) and 114 blue sapphires in baguette and emerald cuts (approximately 9.37 carats).

Dial Architecture and Gem-Set Counters

The dial base of blue ruthenium crystals provides the chromatic foundation against which three excentered counters perform their functions. The largest counter, positioned at 3 o’clock, displays local time via a disc with a double track of diamonds and a black onyx chapter ring bearing blue sapphire hour markers. The emerald-cut blue sapphire at 12 o’clock — a nod to a preferred shape of Harry Winston himself — is the most legible of the dial’s many jewellery references. Local time is set straightforwardly with the crown; home time and the day/night indicator are adjusted through pushers on the case flank, keeping the setting sequence logical for the travelling wearer.

At 9 o’clock, the home time counter is framed by diamonds, with four large baguette-cut diamonds marking the quarter hours, a black onyx ring, and sapphires encircling a blue aventurine day/night indicator — a practical tool for confirming whether the second time zone is in daylight or darkness before placing a call. Selecting the corresponding city is equally straightforward: a pusher beneath the crown advances a disc engraved with 24 city names. The aperture at 6 o’clock frames the one-minute tourbillon, which carries a blue seconds hand. The overall gem count on the dial alone reaches 185 baguette-cut diamonds and 35 baguette-cut blue sapphires, distributed across all three counters. The House presented this piece at Watches and Wonders, the annual summit for haute horlogerie introductions.

Why It Matters

Five examples of the Ocean Tourbillon GMT Worldtimer will exist. Each combines a complication pair — historical tourbillon and practical GMT — with gem-setting of a complexity rarely attempted on a curved wristwatch case. For collectors in the GCC, where both sophisticated travel and a discerning appreciation for high jewellery watchmaking are well established, this edition occupies a precise and largely uncontested position. Explore the Harry Winston collection for full details on availability.

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