Hublot launches Square Tourbillon 4 Day Power Reserve watch with carbon fiber case



I must admit that when I browse Hublot's Big Bang collection, some watches are so similar to each other that it's easy to be dazzled and lose sight of the uniqueness of each watch, even some of the more unique versions like the Square Bang. However, the uniqueness of the new Square Bang Tourbillon 4 Day Power Reserve watch is immediately apparent. This is the first Square Bang watch that is not a chronograph, and more importantly, it has a very unique skeleton display.

Since this is the first tourbillon watch in the Square Bang series, Hublot wanted to create a unique case for it. To do this, they completely redesigned the 42mm case, using a carbon composite material woven into vertical and horizontal lines. This material creates a striking patterned texture on the sides of the case and the wide, flat bezel. It's a little weird to see a material that usually feels natural and casual being tamed into rigid lines - this is because carbon composites are usually made of carbon fibers and bonded with resin to enhance their strength, which usually creates random patterns in the material. However, through careful crafting, the final pattern can be predetermined, just like this watch.

Speaking of hard lines, the skeletonized display features completely square bridges. This gives the piece a modernist appeal, like a Mondrian painting. The dial is full of windows through which you can admire the individual components inside the movement, which are divided into small pieces for you to admire. It contrasts with the round parts of the movement mechanism, such as the gear train, power reserve indicator, power barrel and tourbillon.

It is worth noting that each of the four elements is specially arranged to match the four sides of the square design: the power barrel at 12 o'clock, the winding system at 3 o'clock, the tourbillon at 6 o'clock and the power reserve indicator at 9 o'clock. It does not necessarily balance the display, as the size and function of each element are very different, but it does create a sense of harmony.

The movement that powers the Square Bang Tourbillon watch is the MHUB6023. This is a manual-winding movement with a 96-hour power reserve, which is why the “4-day power reserve” in the watch’s full name comes from it. A tourbillon watch is an energy-intensive complication due to its continuous rotation, so a 4-day power reserve is really impressive. This is also why the power reserve box takes up so much space at the top of the display.

Thanks to the dynamic geometric display, it is a watch with a lot of personality.

Model: Hublot Square Bang Tourbillon 4-day power reserve
Reference: 805.QD.0170.RX
Case: Ø 42 mm x H 13.2 mm, carbon fiber
Dial: Skeleton dial with square bridges
Water resistance: 30 m (3 bar)
Movement: Hublot MHUB6023 manual winding movement, 25 jewels
Frequency: 21,600 vph (3 Hz)
Power reserve: 96 h
Functions: Hours, minutes, tourbillon, power reserve indicator
Strap: Structured rubber with ceramic and titanium folding clasp