... fingertip Technical Specification:1, Display Mode: LCD Display SpO2 display: 2-digit and 7-segment digital display Pulse rate display: 3 ... requirement: 1.5V(AAA size) alkaline battery x2 Battery voltage: 2.6V—3.3V4, Operating current: < 10mA5, Resolution: SpO2 + 1%, Pulse ... rate: + 1 bpm6, Accuracy: SpO2 + 2% (during 80%--99%) and + 3% (during 70%--79%) Pulse rate ...