Cartier may be a brand you know from their Tank or Santos. That’s cool – you know your fair share of Cartier. A bit less original though, since these are the watches known amongst the masses. Especially when you realize that this brand has much more to offer than these two. Nothing wrong with them though. As a little peak inside the 2018 SIHH Cartier collection, we’re now seeing this beautiful Rotonde de Cartier Mysterious Day & Night. 

Cartier Rotonde de Cartier Mysterious Day & Night

First of all, this specific watch is an example of Cartiers capabilities to create watches and clocks that surpass the level of the Santos and Tank. Of course, those two are absolutely examples of fine watchmaking. However, the Mystery Clocks we know from the brand – which extend as far back as 1912 – are the inspiration for this new watch. The Rotonde de Cartier Mysterious Day & Night is a perfect example of the brand’s long-lasting experience in complex watch making.

This particular new watch draws its inspiration from the famous Comet Clock we alle know. The Day & Night complication comes from that specific clock being the first for Cartier back then. This new watch will be available in two different types of gold. A pink gold version and a white gold version – both in a 40mm case. Of course coming with the characteristic Cartier Sapphire Cabochon crown. 

Cartier Ronde de Cartier Mysterious Day & Night watch House of Chronos

The dial exists out of a center guilloche pattern radiating to the outside, which gives the watch an instant cool look. The dial is accompanied by a lonely blued hand displaying the retrograde minutes on the lower half of the dial. On the top half of the watch, we find the Mystery complication. Which means we can fully see-through the watch without having a clue of the connection of the hands – not really of course, but it does the trick.

This Mystery complication uses two different types of indicators. One is displayed as the sun, while the other one represents the moon. Both display a 12-hour cycle meaning Day and Night. A very romantic way of telling time and also very classy. If you don’t like it go and buy something with ‘normal’ hands, but don’t degrade this watch. It is the pure soul of this complication that makes us shiver and embrace the fact that Cartier does not only make Tank or Santos watches. Thank god.

Cartier Ronde de Cartier Mysterious Day & Night watch House of Chronos


The watch is powered by the in-house Caliber 9982 MC, a frosty piece of technique which makes us drool. The movement is hand-wound and in full effect it does the job for about 48 hours. In total, there’s 174 pieces of LEGO needed to complete this set – of which 26 are jewels. This beauty will expectedly retail for as much as $63.000 when it’s available for the customer next year. However, Cartier could change prices around SIHH. We’ll see about that.