What model is this swatch? What do the three circles in the dial 1.2.3 stand for? What are the three buttons 4.5.6 on the case?

Swatch is the entry-level brand of Swatch Group, and it is the chronograph of timely movement. The positions of 1, 2 and 3 correspond to hours, minutes and seconds respectively. 4, 5 and 6 respectively correspond to the timing start/pause button, the watch handle and the timing reset button. 5 is used to rotate and adjust the time after pulling out. 4 is used to start timing after pressing, pause timing when pressing again, and resume timing after pressing again. 6 Used to reset the hands of the three small dials to zero after the timing is completed (press the timing button to stop the timing).

I really don't know your model. The lettering on the back shows that this watch adopts the patented aluminum case of s watch, which is waterproof, but it does not specify the waterproof depth. It is estimated that it is the waterproof appearance of life, and the number of drills in the movement is 4, and nothing else.