Display:
OLED two color display, waveform display

Measurement range: 70~99%

SpO2
Resolution: +1%

Accuracy: +2% (70%~99%), 
unspecified (<70%)

Measurement range: 30- -240 bpm

Pulse rate

Resolution: +1%

Accuracy: +2bpm or +2% (select larger)

Low Perfusion≤0.4%

Power:
1.5V (AAA size)

alkaline battery x 3 (Not included )

Supply voltage: 4.5~5V