Use the flathead screwdriver we sent you. You will need a small, pointed object to pry open the mesh clasp. The type of screwdriver used to adjust eyeglass screws would work well. A Phillips head screwdriver will not work, since it will be too large to fit into the clasp.
Hold the clasp steady. Place the watch flat on a table or other firm surface. Use your non-dominant hand to hold the clasp firmly in position.
Place the screwdriver head into the small hole on the clasp. The front side of the clasp (which will be facing up when the watch is laying face-up) will have a small hole about 1⁄4 inch (0.64 cm) wide directly in its center. You’ll use this hole to pry the strap open. Put the tip of your screwdriver—or other tool—directly into the hole.
Pry the clasp upwards to open it. There will be a small set of hinges at the base of the watch clasp, on the side closest to the watch’s face. Slowly exert pressure down on the screwdriver to pry the top portion of the clasp up and open.
Slide the clasp up or down the mesh strap. Adjust the clasp to accommodate your wrist. Sliding the clasp farther up the mesh strap (towards the watch) will tighten the strap on your wrist, and sliding the clasp down the mesh strap (away from the watch) will loosen the strap.
Align the back of the clasp with a groove in the mesh watch strap. Due to its design, the back of the mesh watch strap will have a small groove every 1⁄8 in (0.32 cm) or so. The back of the clasp will have a corresponding indentation that fits snugly into any of these grooves.
Close the clasp. Once you’ve found the best position for the watch strap and aligned it with a groove in the mesh strap, close the clasp to lock it in place. You should hear a “pop” sound as the clasp snaps shut.