1. Intended for non-invasive continuous or spot check measurement of functional oxygen saturation of arterial hemoglobin (SpO2) on adult patient. 2. Provides oxygen saturation, pulse rate. 3. Display range: SpO2: 60% -100% 4. Pulse rate: 30-200bpm5. Accuracy: saturation (% SpO2) 70% to 100% + / -2 digits6. Pulse rate: 30 to 200bpm + / -4digits. 7. Powered by 2 AAA-size.