1.0" OLED Screen Fingertip Pulse Oximeter SpO2 Blood Oxygen Saturate Heart Rate Monitor is commonly used to detect human&acute;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!                                    Features             Support 1.0" OLED display， with alarm function， independent switch， upper and lower limits， plethysmogram， oxygen saturation， pulse rate， battery indicator etc.<br> Easy and convenient to operate<br> Reliable accuracy and durability<br> Low power consumption; powered by AAA batteries， it could keep long working time<br> Advanced DSP algorithm minish the influence of motion artifact and improve measurement accuracy of low perfusion<br> Intended use for spot check of blood oxygen saturation level at home， in sport and recreational use， such as mountain climbing， high-altitude activities and running<br> Battery low voltage indicator in visual window<br> The product will automatically be powered off when no finger is in the device for longer than 16 seconds   <br>                                                            Specifications             Screen     1.0" OLED    <br> Oxygen Saturation Range (%SpO2)     35% to 100%      <br> Pulse Rate     ±2 bpm    <br> SpO2 Measurement Range     70~100%    <br> Resolution     +/- 1%    <br> SpO2 Accuracy     +/- 2% (70%~100%)， unspecified (                        Package Includes            1 x Oximeter<br>1 x Lanyard<br>1 x User Manual<br>