The oximeter can be used to measure oxygen saturation, pulse rate and perfusion index through the finger. This is specially designed for children, mini and cute. Features: [Multifunctional]: Pulse oximeter mainly measures oxygen saturation, pulse rate and perfusion index. This is specially designed for children, mini and cute. [How To Use]: Turn the Pulse Oximeter on, put one of your fingers into the rubber hole of the oximeter. Then release the clamp, press the button, oximeter will go into the working state. The oximeter will automatically fall into standby or sleep mode after 8s seconds without a finger in it. [Quicker Display: The oximeter adopt advanced sensing technology, the test results will be displayed on the screen after 5s. No need to wait. [TFT Display]: Low power consumption, TFT clear display, 4 directions can be adjusted for conveniently reading. Convenient and compact, portable for home or travel use. [Warranty]: If there are any problems, please contact our store in