Reliable health assistant The finger oximeter is equipped with adaptive optics measurement function and the detection is accurate. Perfect for home, hospital, sports health, fitness enthusiasts, outdoor sports enthusiasts. Precise One-Button MeasurementPut your finger on the professional oximeter, then simply press the power button to quickly get an accurate measurement of your SpO2 (blood oxygen saturation) and of your pulse. Digital LED DisplayHigh-definition display allows you to view the results more clearly even at night. The pulse oximeter will display SpO2, PR (pulse rate) and a bar graph on the screen. [Power supply] Powered by 2 AAA batteries (this product does not include batteries) Low Power ConsumptionThe pulse oximeter automatically switches to off mode within 8 seconds after your finger leaves the probe. Includes carrying case and power cord. < /p>