I purchased a 7900 KG-3 several months back. I recently found out that in full charge, it only goes by a month before it drops to medium. Tried to test again, this time 2-3 days under the sun. Still drops to medium after a full charge. The watch is fully functioning. I have a few other tough solar from casio and they dont have any quick dischargesas compared to this watch.
So from full charge it only lasts about a month before dropping to medium.
Any of you guys can help me out ? Is it a battery problem or the unit itself?