TrendMedic O2Ring Benutzerhandbuch Seite 11

1) Wear the device on thumb finger, index
finger
as option in case of too tight for thumb. Try to
move the device along the forefinger to find
out a best fit. Avoid being loose. Loose
wearing causes inaccurate measure.
2) Device will turn on automatically. After a
few seconds, the device will begin to monitor.
Notice:

Keep snug enough, loose wearing may
cause inaccurate readings.

DO NOT use middle finger; if too tight for
thumb or forefinger, try little finger.

If the working time is less than 2 minute,
the data will not be saved.