To ensure the functioning of the two independent chronographs integrated in the one movement, McDonnell had to contend with the power demand and friction in the movement. The watch uses patented jewelled vertical clutches to Repliky Richard Mille rm 21 reduce friction and stop the flyback from blocking the return-to-zero, plus a jeweled roller for improved precision and energy efficiency.MC: Are the women doing their own thing, or do they belong to watch clubs?HS: The true collectors want to stay private. Men and women. They want to remain behind closed doors. They're the ones who are on the phone bidding with the auction houses, you know. But women don't really go to watch clubs. Maybe they would if there was a watch club designed just for them. But I don't think we have the team spirit that men have.The split second began around one year after the 'Universelle,' Raggi told me. "When we started in 2016, it was not named RD#4 at first, but rather, it was an open project – one for experimentation. The specifications were not finalized at the beginning, so we were open to trying things. For instance, the tourbillon and the grande sonnerie were added later on. We also had the idea, in order to reduce the thickness of the movement, to integrate the split-second mechanism inside the ball bearing."
One of the most interesting Repliky Richard Mille rm 67 features of the watch is that it also includes a chronograph, which can record either solar or sidereal time at the user's discretion. The dual train, single balance design presented some tremendous technical challenges; Daniels' heir, the English watchmaker Roger Smith, describes some of these in the essay for the listing at Sotheby's:In 1985, Swatch launched the Swatch Art Special, a program that commissioned popular artists to apply their unique aesthetic onto the Swatch form. From the very start, the program would establish a legacy of creating not only special Swatches but also uniquely collectible objects that blurred the lines between watches, art, and even apparel.One doesn't buy this watch for horological heft - it's a quartz watch collaboration with a fashion designer. Or the standout design of the case - it does look quite like another watch. One buys this watch because one likes it. And if you like a little extra leather on your strap, well who am I to judge?Taking that third point to heart, in 1985 the company launched the Swatch Art Special (now called Swatch & Art), a program where popular artists were commissioned to create limited edition designs for the brand. Since then, Swatch has collaborated with artists including Keith Haring, Damien Hirst, Kiki Picasso, and Vivienne Westwood on a variety of fun, flamboyant, statement-making watch designs – several of which are now quite collectible (and worth a lot more than their original price).
A few key components are not ceramic. As you can see above, the crown and coin-edged rotating bezel are made from stainless steel, fausses Richard Mille rm 38 adding additional contrast to the blacked-out aesthetic. The caseback is titanium and features the same tinted sapphire used for the dial.While the case diameter is the same, the case itself has been made thinner (though it still has the same soft-iron inner case to protect the movement from the effects of magnetic fields). The XVIII had an 11mm case height whereas this one is now 10.8mm in diameter. It's that change that signals something new under the hood. That would be the IWC in-house 32111 calibre with 120 hours of power reserve.

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