Following last year’s reveal of the quartz Serpenti Seduttori, Bulgari is returning to the serpentine form for women’s wrist wear, this time with additional mechanical complexity: the Serpenti Seduttori Tourbillon.

The manually powered watch’s caliber is a BVL150, a 23-jewel design which operates at 3 Hz. The timepiece’s power reserve is 40 hours, and it is guaranteed to survive submersion to a depth of 30 meters.

As the name suggests, the watch is inspired by our scaly, spineless friend, the snake. The watch is shaped in the form of a snake’s head, and the wrist wear as a whole achieves cohesion with the pricier strap option, which uses diamonds to fill out a scale-like motif. With a leather band option, the diamond weight is 2.88 carats; with the bracelet, it is 7.89 carats.

The price difference is, of course, substantial. The leather band option for the Serpenti Seddutori Tourbillon is offered at $78K for rose gold, and $82K for white gold; the bracelet and white gold option brings the price tag to $151K.