Casio “10 year battery watch”: battery reality, using AE1500 as an example

==The watch===

AE1500
"10-year battery"
Battery: CR2032
Battery capacity: 230 mAh

====The measurements===

Average consumption current during normal time keeping: 1.27 uA
Current of LED backlight: 8000+/-500 uA for 1.5s

====Verdict=====

1. 21 years of battery life if the watch is only used to see the time and buttons are not pressed.

2. 69000 LED uses on a single battery.
– if one uses backlights 10 times a day, the watch will run…

Casio "10 year battery watch": battery reality, using AE1500 as an example