pulse oximeter display Format: LCD 

pulse  oximeter back light: LED 

SPO2:35-99% 

Pulse Ratio:30-255 BPM 

Pleth Wave: LCD Graphic Display 

pulse oximeter battery Voltage Low Indication: LCD Bar Graph 

Power Requirements: Two AA size 1.5V Alkaline Battery; 

Power Consumption: less than 20 mA.

Resolution: 1% for SPO2 and 1 BPM for Pulse Ratio. 

Measurement Accuracy: ±2% in stage of 70%-99% for SPO2

Unspecified in stage of 35-69% for SPO2

±2BPM or ±2%(Select Larger)for Pulse Ratio. 

Measurement Performance in Low Perfusion: SPO2 and pulse#118alue can be shown correctly when pulse-filling ratio is 0.4%.  

Interference Resistance Capacity against Ambient Light : Deviation is smaller than ±1%

pulse oximeter is equipped with a function switch, through which the Oximeter can be automatically powered off when no finger is in the Oximeter more than 4 seconds.