Remove watch links from the bracelet
Use the micro-adjustment holes on the clasp
Move the spring bar to a tighter position if available
Replace the strap with a shorter one
Use a watch strap hole punch to add a tighter hole
Shorten the leather or fabric strap by trimming only if designed for it
Take the watch to a jeweler or watch repair shop
Use a smaller case watch if the current one is too large
Wear the watch higher or tighter on the wrist
Add a strap keeper to secure excess strap length