On the back of the watch you can stick your fingernail (or a very small screwdriver) under the little thumbscrew and push it up. Then you can set the watch by turning the thumbscrew. When finished, push the thumbscrew back down. You can also check the site: www.relicbrand.com but for most pocketwatches you have to pull out the turning mechanism that is right next to the button that opens the watch so you can see the time. Just pull it out all the way and change the time, Half way to change the date.