Product details of Oximeter Finger Clip Oximeter Finger Pulse Monitor Oxy Saturation Monitor Heart Rate Meter 1. Display Type:Two colors OLED display 2. with beep sound 3. SpO2:Measurement range:70~99 Accuracy:±2% on the stage of 70~99,Unspecified(≤70) for SPO2 Resolution:±1% 4. PR:Measurement range 30BPM~240BPM Accuracy:±1BPM or ±1%(the larger one) 5. Power: two AAA 1.5V alkaline batteries(not include) 6. Power consumption:below 30mA 7. Automatic power-off:the product shuts off by itself when no finger is in the product in 8 seconds 8. Dimension:62mm×32mm×33mm 9. Operation Environment:Operation Temperature:5~40 Storage Temperature:-10~40 Ambient Humidity:15%~80% on operation 10%~80% in storage Air Pressure: 70kPa~106kPa 10. Measurement Performance in Low Perfusion Condition:required test equipment (BIO-TEK INDEX Pulse Oximeter tester) could measure the available pulse wave with the amplitude of 6% of the simulation pulse wave amplitude. 11. Interference Resistance Capacity against Ambient Light:Device works normally when BIO-TEK INDEX Pulse Oximeter tester exerts interfering signal test..