Comparison of SpO2 Measurement Accuracy of Different Types of Smartwatches

Inclusion Criteria: * Passing the initial examination, which will determine the following data: wrist circumference, heart rate, blood pressure and blood oxygen saturation Exclusion Criteria: * pregnancy * severe cardiovascular conditions * severe asthma or other severe respiratory conditions * injury to the upper limbs or hands that could affect the peripheral perfusion * diabetes * hypotension or hypertension