Ulysse Nardin Blue Sea (Ref. 263-97LE-3C) Limited Edition

Resolutely anchored in aquatic sports, the Blue Sea by Ulysse Nardin is designed to tackle extreme conditions. It perfectly combines its dual function as a diving instrument and beautiful watchmaking piece. Blue Sea has a self-winding movement featuring a 42-hour power reserve indicator, oversized small seconds and large date display.

A symbol of the vigour of youth, this powerful timepiece showcases Ulysse Nardin’s constant advances in watchmaking technology. Its stainless-steel case, 45.8 millimetres in diameter, has been specially treated with a sophisticated vulcanisation process giving it a blue rubber coating with a remarkable appearance and a truly comfortable feel.

Its exhibition case-back reveals the self-winding movement also blued. The non-moving metal parts of the movement have been treated with a stainless blue titanium based alloy (ion sputtering process). Where necessary, the metal parts have been reworked to accommodate the blue coating, the thickness of which is 1 micron with a hardness of 1500 HV.

To enhance its look, a wave pattern adorns the structured strap and dial. The hour markers and hour and minute hands are covered with blue luminescent material for improved readability. Its power-reserve indicator is situated at 12 o’clock while the small seconds and large date are displayed at 6 o’clock. Small hands are painted blue. The sapphire crystal has been treated with an anti-reflective coating.

Fitted with a unidirectional rotating bezel and screwed crown, its individually-numbered case is water-resistant to 200 metres. This edition is limited to 999 pieces, each individually numbered on the side of the case. The reliability of the Blue Sea is further strengthened by an exclusive black ceramic folding clasp and a blue rubber strap with ceramic components.

Technical details
Model: Blue Sea
Limited Edition of 999 pieces
Reference 263-97LE-3C: Stainless steel

Calibre UN-26, 11 ½’’
28 jewels
Power-Reserve: Approximately 42 h
Winding: Self-winding

Chronometer with power-reserve indicator at 12 o’clock
Small seconds and large date at 6 o’clock

Stainless steel specially treated with a blue rubber coating using a sophisticated vulcanization process
Unidirectional rotating bezel
Dial and strap with a motif in the form of waves
Diameter: 45.8 mm
Water-resistance: 200 m
Crystal: Anti-reflective sapphire crystal
Crown: Screw-down
Case-back: Anti-reflective sapphire crystal

Rubber strap with two black ceramic elements and folding clasp


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