Finger pulse oximeter instruction fingertip pulse oximeter, based on all digital technology, is intended for noninvasive spot-check measurement of spo2 and pulse rate. The product is suitable for use in family, hospital (including clinical use in internist/surgery, anesthesia, pediatrics, intensive care and etc.), oxygen bar, social medical organizations and physical care in sports. The pulse oximeter finger, based on alldigital technology, is designed for non-invasive randomizedmeasurement of oxygen saturation functional hemoglobin arterial (spo2). The product is suitable for use in family, hospital, oxygen bar, community health, physical care in sports and etc. 1. Visualization mode: pentacle lcd or penthouse oled offour colors. 2.spo2: measuring range: 70% -90%: 2%, indefinite if it is below 70%. 3.pr: measuring range: 30bpm-240bpm. accuracy: 1bpm or 1%. 4. Power supply: 1.5v (size aaa) 2 alkalinebatteries. 5. Power consumption: below 30 ma. 6. Automatic passage: after 8 seconds without afinger on the machine. 7.dimension: 58 * 36 * 33mm. 8. Operating environment: operating temperature:5 -40