No more need for batteries! Simply store your stopwatches in the docking station included and plug in when a recharge is needed.
You can make the stopwatch age and stage appropriate by setting them to show minutes/seconds, minutes/seconds/tenths or minutes/seconds/tenths/hundredths.
The on/off button is contained at the top so that children cannot easily reset the watches. The stopwatches have an auto sleep mode after 5 minutes of inactivity.