It's Time to GO! Half the battle of toilet training is reminding the child when it is time to go to the potty. The Potty Watch does the reminding so that you don't have to! Just set the timer for 30, 60, or 90 minutes and colorful lights and fun music remind the child when it's time to go at regular intervals all day long. Includes 2 AG-13 button cell batteries. For ages 18 mos. and up.