Technical Specifications Display Type Dual OLED display SpO2 Measurement Range 70~100% Accuracy ± 2% at 70~100% 70~100% 70~100% Pulse Rate Measurement Range 30~250 bpm Accuracy ± 2 bpmn; 2 bpmn; 2 bpm Pulse Intensity Bargraph Indicator Pulse Rate Alarm Limit High: 120 bpm, Low: 60 bpm Power Requirement Battery Two AAA Alkaline Batteries Power Consumption Less than 60 mA Battery Life Up to 15 hours Dimension 71.99(L)× 36.84(W)× 35.8(H) mms; 35.8(H) mms; 35.8(H) mm Weight 42 g Environmental Operation Temperature 0~45º Crdm; Crdm; C Storage Temperature -10~50º Crdm; Crdm; C