Compact & durable. CE Marked and certified OLED display. Class IIa Medical Device - TUV certified. Displays SpO2 & pulse rate. SpO2 measurement range: 70%-99%. Turns off automatically if left idle. Uses 2 x AAA Batteries (Not included) Use this to accurately measure functional oxygen saturation of arterial hemoglobin (%SpO2) and pulse rate (PR). C101A3 5060945732553 ukmedi