Display Mode: OLED display
SpO2 Measuring Range: 0%~100%, (the resolution is 1%).
Accuracy: 70%~100%:±2%, Below 70% unspecified.
PR Measuring Range: 30bpm~250bpm, (the resolution is 1bpm)
Accuracy: ±2bpm or ±2% (select larger)
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%.
Power Consumption: less than 25mAh
Voltage: DC 2.6V~3.6V
Power Supply: 1.5V (AAA size) alkaline batteries * 2
Safety Type: Interior Battery, BF Type