What triggers flyback function on SQUARE BANG UNICO 821.NM.0170.RX BB Factory Hublot Super Clone Watch

Button trigger: Start the chrono at 2 o’clock, then press the 4 o’clock button to trigger flyback. The SQUARE BANG UNICO 821.NM.0170.RX BB Factory Hublot Super Clone Watch copies this function. No need to press pause first.
Instant reset and restart: Press the 4 o’clock button, the mechanical parts link up at once. The chrono seconds hand resets to zero and starts the next run seamlessly. Fast and clean.
Daily feel: Learning how to use the flyback chrono on a Hublot SQUARE BANG UNICO replica watch is actually simple. Just press evenly and firmly in daily use. The feedback feels great to play with.