Use The Evolu Pulse Oximeter is a portable device designed for non-invasive determination of oxygen saturation in human arterial blood (SpO2) and pulse rate. The device is applicable for home use, in medical and social organizations, and in sports medicine. It is used to measure oxygen levels before and after physical exercises or sports activities such as running, hiking, or cycling, as well as during airplane flights. The use of a pulse oximeter is particularly important for at-risk patients, including people with heart disease and asthmatics. It is also recommended for athletes and healthy individuals who have to ascend to high altitudes. - How to take To use the pulse oximeter, you need to fully insert one finger into the finger chamber so that the nail is facing upwards. Then release the clip and press the power button to turn on the device. The finger should remain motionless during the measurement. It is not recommended to use the device during sports activities, as movement can lead to inaccurate results. Once the readings stabilize, read the measured oxygen saturation and pulse rate values from the screen. The pulse oximeter will automatically turn off 10 seconds after the finger is removed. - Contraindications No direct contraindications for the use of the Evolu Pulse Oximeter are specified. However, it is not recommended to use the device during sports activities, as movement can lead to inaccurate measurement results. It is also important to note that a decrease in blood oxygen saturation, with or without accompanying symptoms, requires medical examination.