The case, in patented Zalium or in 18kt Sedna gold, measures 53.8mm x 35.8mm x 10.7mm. It has double sapphire crystals and it is water resistant to 30 meters. Zalium is an ultra-light alloy developed by and exclusive to Harry Winston. For the first time, Harry Winston also uses Omega's Sedna gold, giving the timepiece a warmer color and finer finish. This unique 18K gold alloy has a high proportion of palladium instead of the silver usual in rose gold alloys.
Movement is the Swiss automatic Harry Winston in-house caliber HW3502 with 32 jewels, 28,800 vph and a power reserve of 50 hours. It has a flat silicon spring and an 18kt white gold rotor. It features Côtes de Genève finishing, circular graining, and chamfered bridges.
Functions are: excentered hours and minutes, day/night indicator, dates, retrograde hours in second timezone.
The unique off-center dual time indicators are driven by a movement, superlative in quality and true to the Harry Winston standard. The caliber HW3502 epitomizes the two core principles of Harry Winston's watchmaking: the off-center indications and the retrograde display, both key components of this timepiece and its movement. To simplify, the crown controls all functions. Perfect for the world traveler, the main time zone on this timepiece also has a day/night indicator. The second timezone works in a different way. Pulling on the crown removes the red hand from sight. The time is set using a small disc located in the opening at the center of the dial. Pushing in the crown, the hand returns to its position. This sequence is essential to the proper functioning of the retrograde system that displays the local time. The hand moves gradually from 0 to 12 o'clock, before instantly returning to 0 to start over.
Dials: Main dial in smoked sapphire crystal, transferred indeces, Harry Winston appliqué emeralds and matching opening. Upper dial, plated black and shot-peened with applied markers in 18kt white gold or; Main dial in white smoked sapphire crystal, transferred indeces, Harry Winston appliqué emeralds and matching opening. Silvered and shotpeened upper dial, with 18kt pink gold applied markers. The indications are split into two zones on two floors, with two levels of display, two types of indication and two styles of finish. The main time zone is offset on the right and has two hands under smoked sapphire crystal. This dial is closest to the movement and is set with hour markers that are perfectly visible. On the left, a second dial, closer to the crystal, reveals local time. The careful arrangement of vertical openings gives the Avenue Dual Time a unique personality. The local time zone's hands successively cross these windows, vanishing from one to reappear in the next.
It comes on a matte brown or black alligator alligator leather strap with a Zalium or Sedna gold ardillon buckle.
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