| Effective Measuring Range | |
| Saturation | 40 to 99% |
| Heart pulse Rate | 40 to 250 bpm |
| Resoltion | 1 digit |
| Accuracy (incl. otion artifacts and low profusion) | |
| Saturation (70-99%) | +/- 2% or +/- 2 digits |
| Heart Rate | +/- 3% or +/- 3 digits |
| Display | |
| Saturation | 2 characters |
| Heart Rate | 3 characters |
| Signal Indicators | Sensor 'OFF' & 'Weak Signal'
Flashing Heart Icon |
| Battery Indication | Full Power, 1/3rd, and near empty |
| Power Requirements | 3.6V Lithium battery, 1/2 AA size |
| Signal Indicators | 1000 Hrs or 40 days of
continuous usage |
| Mechanical | |
| Overall Dimensions | 2.91" x 1.57" x 1.61" (74x70x41 mm) |
| Weight | 1.8 oz (55g) incl. batters |
| Environmental | |
| Storage Temperatures | -4º to 158º F (-20º to 70º C) |
| Operating Temperatures | 39º to 107º F (4º to 42º C) |
| Humidit | Up to 95% non-condensing |