• Multifunctional oximeter: measures blood oxygen levels. • Oxygen saturation (%SpO2), heart rate, and differential tension. • Clinical accuracy for home use with reliable results. • SpO2 accuracy of +/-2%, measurement range from 30% to 100%. • Accurate pulse rate to +/-3 bpm, measurement range of 30-250 bpm. • Easy to use: insert finger and press the button for a few seconds. • Automatic shutdown to prolong battery life. • Portable and suitable for children, adults, seniors, and pregnant women. • Useful after activities like skydiving, running, swimming, skiing, climbing, or upon waking up. • Tips: Check the battery direction and the red light before measuring. Clearly differentiate between oxygen saturation (SpO2) and heart rate to avoid interpretation errors.