Make a slip knot and place on crochet hook. Holding the wristwatch in one hand, insert the crochet hook into the center. With crochet hook, grab yarn and pull under band, *yarn over and pull through both loops on hook (single crochet just made); repeat from * until band is fully covered. Chain 1, join to beginning single crochet with slip stitch. Break yarn, leaving a tail at least 5 inches long, and pull the ends through the remaining loop. With blunt needle, weave in tail between band and crochet.