With Baselworld 2017 over, it is hard to believe that there are still watches from the famed horology event that have yet to be highlighted. But the new Zenith Chronomaster El Primero Grande Date Full Open is a last lingering surprise.

The Zenith watch comes in two variations. The Chronomaster El Primero Grande Date Full Open is available with a stainless steel case, or a two-tone stainless steel and pink gold case. Both versions feature a domed sapphire crystal front, as well as a sapphire caseback.

The 45mm case features the 332-component Zenith El Primero Calibre 4047B movement. It offers a 50-hour power reserve. The dial boasts a sun and moon phase indicator of carved sapphire. It is super-skeletonized to offer a peek at the workings of the movement inside.

Zenith has outfitted the stainless steel version with a matching bracelet or a black leather strap; the two-tone option is paired with a black or chestnut brown leather strap.

The Zenith Chronomaster El Primero Grande Date Full Open is expected to cost a little more than other models, so expect to pay north of $15,000.