1) Unscrew the adjustment tool to let the band fits inside it;
2) Insert the tip of the tool into the holes on the side of the strap following the direction of the arrow. Screw the tool in to drive the connecting pins out of the band;
3) Remove or add enough sections according to your wrist size;
4) Reassemble the strap by reinserting the metal pins in the opposite direction to the direction of the arrow. (Attention: The metal pin has a doubler head and a thinner tail, it must be inserted into the hole by entering the thinner tail first);
5) Use the flat side of the tool to push down on the metal pin and slide it until it is flush with the side of the band.