The oximeter can be used to measure oxygen saturation, pulse rate through finger. The product is suitable for family, personal care in sports and etc. Features: Power consumption of the product is low and the AAA batteries can be operated continuously for 20hrs. The product will automatically be powered off when no signals is in the product within 5s. Pulse oximeter mainly measures oxygen saturation, pulse rate. It is suitable for family, personal care in sports and etc. What’s more, it also suits for elderly people over 60 years old, people who work more than 12 hours a day. The oximeter adopt advanced sensing technology, the test results will be displayed on the screen after 5s. No need to wait. Suitable for use in family, office, oxygen bar or any other publics. Specifications: Power: 2*AAA (not included) SPO2 Measurement Range: 70-99% SPO2 Measurement Accuracy: +-2% SPO2 Measurement Resolution: +-1% Pulse Measurement Range: 35-250BPM Pulse Measurement Accuracy: +-1BPM Using