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Description 【ACCURATE MEASUREMENT】Our pulse oximeter fingertip uses the latest technology to guarantee more consistent and reliable results. The SpO2 error and the heart rate is ± 2%. 【AUTO POWER OFF】This pulse oximeter uses the acceleration sensor. It can accurately show the relative readings in 5 seconds. After measuring, it will shut down within 8 seconds automatically. 【EASY TO USE】It is only necessary for users to put one of their fingers on the photoelectric sensor of the finger tip for diagnosis, and a display screen will directly show the measured value of the hemoglobin saturation. 【LUMINOUS LED SCREEN】The screen shows: pulse rate, SpO2 , heart beat sign, pulse waveform. One button operation and low battery indication. The large rotating multidirectional screen allows you to see the readings in any direction easily, which facilitates the testing of different fingers. 【LOW ENERGY CONSUMPTION】2 AAA batteries can be used continuously for more than 30 hours.(Not included) Specifications: PRODUCT PARAMETER： Control method: finger clamp Point：2:0~100% Range:70-100%,±2% Accuracy: 0-69% undefined Heart rate: 70-100%, +2% Range: 25-250bpm Accuracy:±1bpm Voltage: 3V Maximum power: 0.05W Battery voltage: 2×1.5V AAA Size: 60×33×32mm Product weight: 37g(without battery) Package Included: 1×Pulse Oximeter， 1×User Manual