First, we can look directly at the horizontal clutch gear on the dial. The teeth are flexible. This technology is used in Rolex's 4130 chronograph movement and Patek Philippe's 330 movement; it's an advanced technology mastered by only a few brands. So what are its advantages?

The advantage of flexible teeth is that it prevents abnormal hand jerking. In conventional horizontal clutch chronographs, sometimes the adjustment isn't perfect when starting the chronograph replica watches, resulting in insufficient meshing between the gears. This causes abnormal jerking of the chronograph second hand. Flexible teeth, made with LIGA technology, allow for more precise micro-electromechanical machining, producing very soft, flexible teeth that ensure smoother contact between the gears and prevent abnormal jumping of the chronograph hand.

Many in-house chronograph movements now use vertical clutches. Vertical clutches eliminate gear-to-gear contact; they rely on friction plates for actuation, but this is invisible. Hublot solves the hand jerking problem while still allowing you to see the entire chronograph operation.

Hublot replica utilizes a dual horizontal clutch, where the chronograph minute hand is powered by a separate mainspring. This allows for a more stable oscillation and more direct power transmission after the chronograph function is activated. Unlike common horizontal clutch chronographs that consume significant power upon activation Rolex fake, affecting timekeeping, Hublot's UNICO uses a direct mainspring to provide a stable power supply to the chronograph minute hand, ensuring uninterrupted timekeeping after the chronograph function is activated.

Although the movement is 6.75mm, on par with Rolex or other mainstream chronograph movements, I feel the UNICO is superior because it features a flyback chronograph function. The UNICO is more complex, and the flyback is a more advanced feature.