Display Mode: 1.3" 65K Color OLED display
Screen Resolution: 128*96
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)
Measurement Performance in Weak Filling Condition:
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% (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 100mA

 Voltage: DC 3.6V~4.2V
Power Supply: Voltage 3.7 rechargeable lithium battery × 1 
Battery working hour: 20 hours
Battery working life: Charge and discharge no less than 500 times.
Safety Type: Interior Battery, BF Type

-wireless links  transmitter

-wireless links receiver