Muti-function: Digital pulse oximeter can be used to measure pulse rate, blood oxygen saturation levels accurately. Easy to Read: Support SPO2, pulse and bar chart, you can view your result very clear with TFT display. Easy to Use: Accurate and reliable, one-button operation, just clip it on to your finger and turn it on at the press of a button. Automatic power off after 5s when not in use. Widely Applicable: Suitable for everyday use. Widely used in family, outdoor, sports, etc. Compact Size: The oximeter is lightweight and portable.