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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.