• Small in volume, lightweight, convenient to carry.
• With a high-definition OLED screen with display capability from 4 directions.
• Built-in infrared light sensor.
• Ability to measure SPO2 and pulse rate with accuracy.
• Low battery power indicator.
• Low consumption and automatic shutdown after 5 seconds of inactivity.
• The minimum continuous working time is 24 hours, the theoretical number is 55 hours.
• Comes with a case and lanyard.

SpO2 Measurement Range: 0% -100%, (the resolution is 1%).
Accuracy: 70% -100%: ± 2%, Below 70% not specified.
PR Measurement Range: 30bpm-250bpm, (the resolution is 1bpm)
Accuracy: ± 2bpm or ± 2% 
Measurement performance in weak filling condition: SpO2 and pulse rate can be displayed correctly when the pulse filling ratio is 0.4%. The SpO2 error is ± 4%, the pulse rate error is ± 2 bpm or ± 2%.
Resistance to light: The deviation between the value measured in the condition of artificial light or indoor natural light and the dark room is less than ± 1%.
Power consumption: less than 25mA
Voltage: DC 2.6V ~ 3.6V
Power supply: 1.5V alkaline batteries (size AAA); 2
Safety type: Internal battery, Type BF