From Teeratep Sosakul:
Plazeon mimics the Plazeon chrono-power reserve. As the watch is a mechanical watch, its second hand sweeps smoothly. The chronograph function also works similarly to the real watch. Press the start button (button at 2 o'clock) to start or stop the chronograph function. Press the reset button (button at 4 o'clock) to reset the chronograph function.