The 'pack' includes four PowerPoint presentations: Two of them are full screen timers - either 30 seconds OR 5 minutes. The other two are corner timers - again either 30 seconds OR 5 minutes. The 5 minute timers: The circles containing 5, 4, 3, 2, 1 minutes don't count seconds, instead they will slowly rotate for 1 minute. When the time is down to 30 seconds it will spin each second. The 30 second timers exit spin, one per second. The timer has a transparent surround, meaning that the orange background can safely be changed to any colour or any lesson. More info and screenshots can be found at: https://markmolloyresources.wordpress.com/2017/03/13/powerpoint-timers/