Bulgari

From Bulgari: With its ultra-thin 3.12 mm movement and appealing look, the Octo Finissimo Minute Repeater watch revolutionizes the classic approach to complications through the uncompromisingly forward-thinking Finissimo universe and the audacity of Italian style. Combining a sandblasted titanium case with a modern rubber FKM bracelet and a gray dial, the timepiece features cut-out dial markers that enables the sound to pass through from the back of the movement, thus amplifying the volume of the chimes.
Octo Finissimo Minute Repeater watch with mechanical manufacture ultra-thin movement, manual winding, minute repeater and small seconds, BVL362 (3.12 mm thick), 42 hours power reserve and 21'600 Vph (3 Hz) frequency. 40 mm sandblasted titanium case, titanium crown set with black ceramic insert, openwork matte gray dial with small second counter, transparent caseback, rubber FKM bracelet and sandblasted titanium pin buckle. Water-resistant up to 30 meters.

This movement is nearly 40 years old!!!not made by Bulgari anyway

Can you please elaborate? You claimed that the movement is *not* made by Bulgari. Who made the 2.72 mm movement? If you are referring to VC's 1755 from 1992, it was 3.28 mm thick. Later, VC introduced 1731 with a power reserve of 65 hours. That movement is 3.9 mm thick.

many references used this movement, including some Roth's watch(Bulgari era), they then introduced also the automatic version

...38mm would have been better imho.

These guys are on a roll.

I have to add, it actually sounded better than I expected!  Not the clearest tone, and with a thin case, not the loudest sound.  But an energetic and positive sound overall. 

Bulgari should get more credit 👍

Stunning finish to the watch.