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Oxygen saturation measurement range: 35% to 100% (resolution of 1%)
Accuracy: 70% ~ 100%: \u00b1 2%, less than 70% no definition
Pulse rate measurement range: 30bpm ~ 250bpm (resolution of 1bpm)
Accuracy: \u00b1 2bpm or \u00b1 2% take a large value
Power consumption: no more than 30 mA
Operating voltage: DC 3.0V
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