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LED Wavelengths:Red: 660nm.Infrared: 940nm.
Battery life:Two AAA 1.5V alkaline batteries could be continuously operated as long as 30 hours.Resolution: -1% or +1% for SPO2 and -1 or +1 BPM for pulse rate.
Measurement Accuracy:SPO2: 70% t0 99%, -3% or +3 %; =70% no definition.PR: 30 to 235 BPM, -2 or +2 bpm during the pulse rate range of 30-99 bpm and 2% during the pulse rate range of 100 to 254 bpmIt is equipped with a function switch, through which the Oximeter can be powered off in case no finger is the Oximeter longer than 8 seconds.
Outline dimension:Length: 58mm.Width: 32mm.Height: 34mm.Weight: 50g (including two AAA batteries).
Environment requirements:Operation Temperature: 5 to 40.Storage Temperature: -20 to 70.Humidity : 15% to 80% in operation; 93% in storage.