Letsfit IW2 Benutzerhandbuch Seite 24

The watch is disconnected from the Letsfit app on your
smartphone
The watch will disconnect from your smartphone in the following cases:
1. Smartphone Bluetooth is off or exceeds the Bluetooth
connection range (the maximum Bluetooth connection range
is 10 meters and can easily be reduced by walls, furniture,
etc.)
2. The Letsfit app is closed on the phone. (This can occur
automatically under certain circumstances.)
To reconnect the watch to your smartphone, please kindly take the
following steps:
1. Go to your smartphone system Settings, find the Letsfit app,
and enable the Location and Bluetooth.
2. Clear all running / background processes on your smartphone.
Open the Letsfit app, go to the "Settings" page, tap "IW2", and
then the watch will reconnect to your smartphone and update
data. You can also restart your smartphone and Bluetooth,
then re-pair the watch in the app.
Blood Oxygen Level Measurement Accuracy
The Blood oxygen level will be affected by factors such as
motion, watch placement on the wrist, skin temperature and skin
perfusion. These factors will cause fluctuations in blood oxygen
measurements.
For a single measurement on the watch, please wear the watch
a finger-width below the wrist bone, snug but comfortable on
your wrist. When measuring, stay still and make sure your wrist
is flat with the watch facing up. If you are sitting, you can rest
your arm on a table with the watch facing up.
The smart watch blood oxygen sensor isn't a medical device and won't
be able to diagnose or monitor any medical conditions. If there is a
problem with the measurement, we recommend you consult your doctor.
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