Hello,
I bought my wife the Venu 3s and installed the latest software 8.25.
Unfortunately, the battery lasts without sporting activities, oxygen saturation measurement is only active at night, for a maximum of 3 days.
At night, DND and the display for night mode are activated.
Brightness is also not at maximum, how is it with you?
I'm honestly not so happy with the battery life.
On my Forerunner 955 the battery lasts at least 7 days.
Thanks.
BR