What type of battery does the Time Timer Watch use? May 24, 2022 15:45 Updated The Time Timer Watch uses a CR2032. If you need to replace your battery, you can view those instructions here. Related articles How to replace the battery. What is the duration of the Time Timer Watch alert at the end of a Timer or Alarm? What size Time Timer Watch is best for me or my child? Can I set multiple timers on the Time Timer Watch? How long does the Time Timer Watch battery last?