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To effectively avoidphysical diseases,this1.1″ OLED Screen SPO2 Heart Rate Monitor Fingertip Pulse Oximeter is a must have. It is used to detect human’s pulse and the number of liquid-drop within certain time. So you should pay attention to pulse frequency, oxygen saturation (SpO2) and perfusion index (PI) well. You might as well prepare such a practical one for your daily home healthcare. Our pulse oximeter is made of high-class material with assured technology, so it guarantees excellent operation and high accuracy. What is more, it is so easy to use; just simply clip the device on your finger, and it starts to work. Effectively in detecting the heart rate, it will help you learn about your physical condition with ease!