Hook Lock

1. Insert the mini screw driver into the hole where the arrow mark points to. Press the strap firmly onto a table, then push down the screw driver to open the clasp.
2. Slide the clasp to adjust the length of your watchstrap.
3. Insert the mini screw driver into the same hole. Push it towards the opposite side to relock the clasp.

 

These watchstraps are infinity adjustable for a perfect fit.