Effective Measuring Range Saturation: 40-99% Pulse Rate: 40-250 bpm
Accuracy (Incl. Motion Artifacts and Low Profusion): Saturation: +/- 2% or +/- 2 digits;
Pulse Rate: +/- 3% or +/- 3 digits
On Screen Signal Indicators: 'Sensor Off' / 'Weak Signal' / 'Flashing Heart Icon' Battery Low Voltage Indication: LCD Signals
Power Requirements: 3.6V Lithium Battery, 1/2 AA size