Audemars Piguet Royal Oak Double Balance Wheel Openworked Steel 2

A Detailed Look at the Audemars Piguet Royal Oak Double Balance Wheel Openworked Replica Trusted Dealers

Fortunately, it is not all teary-eyed past-reviving that is happening at this anniversary — kudos to AP for it. Accordingly, alongside the re-edition Royal Oak Offshore Selfwinding Chronograph, we see the Introduction of the new Royal Oak Offshore Tourbillon Chronograph, namely Ref. 26421ST and 26421OR, which possess an entirely new design in two case materials.Based on two before Audemars Piguet Royal Oak Offshore Tourbillon Chronograph watches, especially the Ref. 26388PO (see our hands-on with it) and 26288OR, these fresh Royal Oak Offshore Tourbillon Chronograph watches come in stainless steel and 18k rose gold respectively, and feature a new case design which has a thinner bezel and a more spacious dial. Even so, the distinctive Royal Oak Offshore design characteristics are all intact. The 45mm instance remains angular, the bezel is still octagonal, and there’s no missing those exposed hexagonal screws on the bezel. Completing the look are black porcelain pushers for the chronograph and a screw-down crown. Water resistance is also 100m. On the dial, one can observe the exposed motion and the tourbillon in 9 o’clock. Opposite the tourbillon in 3 o’clock is the 30-minute counter to get the chronograph. Also clearly visible are both mainspring barrels. The skeletonized bridges stretch from each of the eight screws in a way that is rather unique and ties the design of this case, dial, and movement together in a way few watches manage to perform so.These watches are powered by the in-house hand-wound Caliber 2947, that is an open-worked variant of this Caliber 2933 located in the Royal Oak Offshore Tourbillon Chronograph Ref. 26388PO & 26288OR. This specific movement comprises 338 parts, an incorporated chronograph movement that has a column wheel mechanism, a beat speed of 3Hz, and a power reserve of a whopping 237 hours. Royal Oak Offshore fanatics are certainly eager to know the prices, and we will update the article when we are able to confirm. Every Audemars Piguet Royal Oak Offshore Tourbillon Chronograph 25th Anniversary version is limited to 50 pieces.

The balance wheel is oft regarded as the beating heart of a mechanical wristwatch. The balance swings back and forth because it’s attached to a hairspring, a flat metal spiral that’s slightly elastic. Most hairsprings are pinned at the center of the spiral, and at the outer extreme. Because of the two immovable end points, they don’t breathe concentrically, a problem that is exacerbated when the watch is vertical and gravity is acting on the hairspring, pulling it off-centre even more.

One solution to this is two use two stacked hairsprings, each mirroring the other and averaging out any errors. Laurent Ferrier and H. Moser & Cie. have both installed double hairsprings in their watches (incidentally both use the same hairsprings made by Moser’s sister company Precision Engineering), while Montblanc has even used double cylindrical hairsprings, one inside the other.

Audemars Piguet Royal Oak Double Balance Wheel Openworked Steel 2

Audemars Piguet went a step further when it unveiled the Royal Oak Double Balance Wheel Openworked at SIHH 2016 that’s equipped with two superimposed balance wheels, each with its own hairspring.

Audemars Piguet Royal Oak Double Balance Wheel Openworked pink gold 2

Audemars Piguet Royal Oak Double Balance Wheel Openworked pink gold 3

In addition to the advantage of having twin hairsprings, two balance wheels means the inertia of the regulator is doubled, which promises more stable timekeeping since a body with greater inertia is more likely to keep going, regardless of shocks.

But there is a downside, as extra energy required to move the second balance wheel – illustrated by the diminished power reserve of 45 hours with the double balance wheel, compared to 60 hours in the movement with a single balance. On balance (no pun intended), the pros outweigh the cons, which is why this watch has made it to market.

Beyond the regulator, the rest of the calibre 3132 inside is functionally identical to the calibre 3120, workhorse in-house automatic of Audemars Piguet. It has been dressed up with skeletonised bridges that reveal the movement’s mechanics. In fact, the movement is almost identical to that in the Royal Oak skeleton ref. 15305 except for one obvious giveaway: the red gold bridge holding the double balance wheels.

Audemars Piguet Royal Oak Double Balance Wheel Openworked pink gold 4

Typical of Audemars Piguet Ladies Watches Prices Replica the movement is skeletonised and finished in a modern style with smooth lines and geometric shapes in the open-working. All the movement decoration is neat and clean, with the prominent, polished bevels on the many edges of the bridges obviously diamond-cut, resulting in the characteristic sharp and shiny edge, with one exception. The gold bridge for the balance wheels appeared to have hand-finished edges, resulting in slight unevenness.

Audemars Piguet Royal Oak Double Balance Wheel Openworked Steel 3

Audemars Piguet Royal Oak Double Balance Wheel Openworked pink gold 5

All the bridges are ruthenium plated for a dark grey finish, which means the eye is immediately drawn to the brighter, rose gold-plated parts of the dial, namely the hands and balance bridge.

Audemars Piguet Royal Oak Double Balance Wheel Openworked pink gold 6

Audemars Piguet Royal Oak Double Balance Wheel Openworked pink gold 1

Audemars Piguet Royal Oak Double Balance Wheel Openworked Steel 4

The rest of the watch is vintage Royal Oak, with the beautifully finished case having mirror polished edges and brushed flat surfaces. The Royal Oak is one of the few watch cases that is justifiably pricing – it looks and feels as expensive as it is – even in stainless steel.

Audemars Piguet Royal Oak Double Balance Wheel Openworked Steel 5

Audemars Piguet Royal Oak Double Balance Wheel Openworked Steel 6

The Royal Oak Double Balance Wheel Openworked is 41mm in diameter and 9.9mm high. The extra height required by the second balance wheel means this is slightly thicker than the skeleton Royal Oak with a single balance that’s 9.4mm high. Though not large, the watch feels chunky and angular on the wrist.

Pricing and availability

The Royal Oak Double Balance Wheel Openworked in pink gold (ref. 15407OR.OO.1220OR.01) is priced at US$76,800 or S$107,700. And the stainless steel version (ref. 15407ST.OO.1220ST.01) is US$44,100 or S$61,800.

Both are about 20 percent more expensive than their equivalent predecessors without the double balance wheel. The watches are currently available at Audemars Piguet boutiques, with retailers receiving it later in the year.