ON SCREEN SIGNAL INDICATORS:
'Sensor Off' / 'Weak Signal' / 'Flashing Heart Icon'
BATTERY INDICATIONS:
Full / One third / Near empty
POWER REQUIREMENTS:
3.6V Lithium Battery, 1/2 AA size
ACCURACY (INCL. MOTION ARTIFACTS & LOW PROFUSION):
Saturation +/- 2% or +/- 2 digits
Pulse Rate +/- 3% or +/- 3 digits
EFFECTIVE MEASURING RANGE:
Saturation 40-99%
Pulse Rate 40-250 bpm
BATTERY LOW VOLTAGE INDICATION:
LCD signals