How do I determine how much power is left on the battery?

• The battery icon on your watch screen displays the remaining level of power in the battery.

  Workout time remaining (approximate)

  Battery icon	ProSense 17	ProSense 57
  	8 to 13 hours	6 to 10 hours
  	5 to 8 hours	4 to 6 hours
  	2.5 to 5 hours	2 to 4 hours
  	0 to 2.5 hours	0 to 2 hours

  When the battery is low, you see this screen:
  

  (Press any button to return to the Time screen.)

  When the battery is too low, the screen may go blank.

  Caution:
  Charge your watch at least once every 6 months when you are not using the watch; long-term storage of the watch with a low battery may degrade battery performance.

  Note: Operation time also varies depending on the operating environment's effects on GPS reception and watch settings, such as backlighting.

  Operating Time

  When you are not using the watch for a workout, the remaining operating time for your watch varies, depending on the features enabled on your watch.

  Display time remaining; ProSense 17

  Setting	30 days	7 days
  Daily Activity Tracking	Off	On
  Auto Sleep	On	On
  Seconds display	Off	Off
  Auto Search	Off	Off
  Bluetooth	Off	On

  Display time remaining; ProSense 57

  Setting	30 days	4 days	2 days
  Daily Activity Tracking	Off	On	On
  Heart rate measuring	—	Off (Normal)	Off (Advanced)
  Auto Sleep	On	On	On
  Seconds display	—	Off	Off
  Auto Search	Off	Off	Off
  Bluetooth	Off	On	On

  Related concepts
  Battery Life
  Related references
  Solutions to Watch Charging Problems