If the speed is fast, for example, an hour will be a few minutes or more faster, then the hairspring is stuck or confused.

This situation will be repaired by the watch repairer.

If the speed is only a little faster, for example, it is only ten or twenty seconds faster a day, then the hairspring is shorter, which is ok.

It is easy to adjust the speed card of a watch. If you know a little about watches, you can adjust them yourself. If you don't do this,

I'm going to find a watch repairman.