TrendMedic O2Ring Benutzerhandbuch Seite 13

sessions. The oldest will be overwritten by the
5th. Please sync data to your phone in time.
3.6.Screen Wake up
The screen will go off automatically for saving
power in Standard Mode; you can touch the
key on top to wake up the screen.
3.7.How to Check Battery
Touch the key on top, you can switch display
between readings and battery.
3.8.Unavailable Symbol
When this symbol displays on
device screen, it indicates the
readings is unavailable right
now.
It may caused by:

Excessive movement;

Poor signal, finger is too cold;
Usually, the readings will recover in a few
seconds when at rest.