Use the provided flat-ended screwdriver to push down the pins circled in red and remove the strap from the watch case while they are pushed down.
Use the suitable screwdriver to remove the screws circled in red on both sides of the watch and remove the resin case.
Place your watch into your new Jinshu case and tighten the screws on both sides of the watch.
Adjusting the bracelet:
To adjust the length of the bracelet, use the flat-ended screwdriver to remove the screws on the adjustable links. Take out the necessary links and connect them back together by tightening the screws.