To set time, you need to turn button in anti-clockwise direction if you have a screw-in lock watch. Gentally pull the button out a little bit. The best way is to use thumb and index finger and use the finger knuckle as a lever in order to pull the button out with as little force as possible. You can feel a little "click". Now you can set time by turning it anti-clockwise. This would turn the minute-hour hands forward until you set the right time. When time is set, push the button back and turn the button clockwise for a few rounds.