SpO2 and pulse rate can be shown correctly when pulse-filling ratio is 0.4%. SpO2 error is ± 4%, pulse rate error is ± 2 bpm or ± 2% (whichever is greater).
Resistance to surrounding light
The deviation between the value measured in the condition of man-made light or indoor natural light and that of darkroom is less than ± 1%.
Voltage
DC 3.6 V ~ 4.2 V
Power supply
3.7 V rechargeable lithium battery × 1
Battery working hour
44 hours in theoretical
Battery service life
No less than 500 times of charge and discharge
Safety type
Internally powered equipment, Type BF applied part
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