The overall appearance of the Square Bang series of Hublot watches adopts the basic DNA of the brand’s iconic Hublot Replica Watches and expresses this in the background of square contours. So far, each of them is a chronograph. The addition to the 2025 catalog is the Hublot Square Bang tourbillon 4-day power reserve, featuring a 3D carbon fiber case and a new movement with a hollowed out square bridge, echoing the contours of the series.

Despite having a square dial and crystal, previous square Bang models used the brand’s standard UNICO automatic timing movement, and the new Hublot square Bang tourbillon 4-day power reserve is the first watch in the series to be completely designed as a square watch. If you take a look at the watch backs captured in our review of the original Square Bang watch quintet, it is clear that they are composed of traditional circular movements installed in square cases.
The Hublot Cal.MHUB6023, equipped with 25 gemstones, operates at a frequency of 21600vph (3Hz), providing up to four days of power reserve (96 hours). Like many watches from Hublot, the Square Bang tourbillon features a transparent sapphire dial for its 4-day power reserve, showcasing its open internal structure. The use of white luminescent material on the hands and hour markers helps improve the readability of the movement’s black finish bridge.

The Fake Hublot Outlet Online structure of the manually wound Cal.MHUB6023 also shows a carefully considered layout, with its tourbillon and silicon escapement mechanism located at the 6 o’clock position, forming a visual balance with the mainspring barrel in the upper half of the dial. Its power reserve indicator at the 9 o’clock position is symmetrical with the winding/setting mechanism at the 3 o’clock position.
The new Hublot Square Bang tourbillon replica watches is also the first watch in the series to feature a 3D carbon fiber case. When presented in bright colors, such as the brand’s MP-09 tourbillon dual axis tourbillon watch, 3D carbon fiber can present an almost whimsical appearance, although the black variant of the tone used for the Square Bang tourbillon 4-day power reserve only provides a unique square texture for its components, further blending into the contours of the model.

The diameter of the Hublot Square Bang tourbillon’s 4-day power reserve case is the same as other models in the series, at 42 millimeters, but the overall height is 12.3 millimeters, slightly thinner. However, the new Square Bang equipped with a tourbillon also offers the smallest water resistance in the series, with a depth rating of 30 meters, while the standard metal/ceramic model offers a depth of 100 meters, and the all sapphire version of Square Bang offers a depth of 50 meters.
The case of the Cheap Hublot Replica is fixed together with titanium H-shaped screws, and its structure is equipped with transparent sapphire crystals on both sides. In other aspects, it has a similar overall appearance to other models in the Square Bang series. The most significant difference from similar products is that the side of the winding crown on the 3 o’clock side of the case does not have a push rod.

To further complement the right angle theme, the Hublot Square Bang tourbillon with 4-day power reserve is paired with a black textured rubber strap, which is embossed with a grid pattern on its outer surface. Another highlight of the strap is the unfolded buckle made of black titanium and ceramic. All existing rubber straps in the Square Bang series of Hublot Replica Watches also have the same grid texture pattern. As this latest model equipped with a tourbillon has the same 42mm diameter and one key system as other models in the series, I believe any strap of the Square Bang chronograph will also be compatible with its case.
The use of a circular movement and an open display screen inside a square case always creates a certain degree of visual discontinuity. As the first model in the series to be designed entirely from scratch as a square watch, the overall appearance of the new Hublot square Bang tourbillon 4-day power storage is noticeably more cohesive and complete.

The square Bang tourbillon of Hublot has a 4-day power reserve with a right angle of motion, and the 3D carbon fiber case perfectly complements the square contour, making it undoubtedly the visually most cohesive model in the square Bang series. In addition, the Hublot Swiss Replica will be added to the series as a standard production model, rather than a limited edition, just like the brand’s barrel shaped Big Bang Spirit series now includes a variety of designs. If the Square Bang series eventually follows a similar trajectory, with different movements, complexities, sizes, and collaborations appearing at some point in the future, I wouldn’t be surprised.