Why do I need to use a pulse oximeter fingertip Many times we are in a state of hypoxia without knowing it, we often have some manifestations of hypoxia, but often feel that we have other problems, rather than think that we are hypoxic, but long term hypoxia will cause serious harm to the human body. oxygen meter finger pulse oximeter The normal range of oxygen saturation was SpO2 94%-99% The normal range of pulse rate was 50-130 Insufficient oxygen supply: SpO2 90%-95% Mild hypoxemia: SpO2<90% Severe hypoxemia: SpO2<85% Advanced heart rate and blood oxygen monitoring technology Light weight, easy to carry 4 display models, convenient view One button operation, fast measurement Natural latex Feels Comfortable Intelligent Automatic Shutdown Pay attention to your blood oxygen condition to prevent health problems in advance This CRFISH fingertip pulse oximeter is clinically accurate, certified medical device. It is well ABSmade of high quality material, clear OLED display, easy to use, providing accurate and reliable readings. CRFISH is your best companion for regular measurement of blood oxygen saturation (SpO2), pulse rate and perfusion index (PI) and Respiratory rate (RR) . Suitable for: Middle-aged and elderly people Oxygen therapy monitoring Pregnant woman monitoring Sports & Fitness Highland Trekking Tours Children Package: 1× Pulse Oximeter 1× pulse oximeter case 1× Lanyard 1× Instruction Manual 1× Certificate of conformity