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twivnignt Blood Oxygen Monitor With Pulse Oximeter Electric BPM Blood Oxygen Testing Machine Equipment Health Monitoring Features: 1. Precision measurement: The pulse oximeter uses the most advanced technology to guarantee the most reliable results. The SpO2 accuracy is ±2%, the measurement range is from 70% to 100%. The pulse rate is accurate to +/- 3 bpm, the measurement range is 25-250 bpm. 2. Easy to use: Users only need to insert their finger and press the button for 8 seconds. The screen will directly display the oxygen saturation of the blood （SpO2）, The pulse rate （PR） and the IP. After removing the finger for 8 seconds, the finger oximeter will automatically turn off to extend the life of the battery. 3. Alarm setting: Our Finger Oximeter can define a numerical limit. When the detected value exceeds the defined range, an alarm will automatically be issued which can quickly remind us that the value is abnormal. 4. Applicable Persons: The finger oximeter is suitable for all ages, from children to the elderly. In homes, hospitals and social medical institutions, you can use this device to measure health data. Description: Ideal for daily monitoring of SpO2, PR. With the unique PI (Perfusion Index) function, it can manage health more completely. Specifications: Power:2*1.5V(AAA)alkaline batteries(not included) Function:SpO2, pulse rate SpO2 measurement range: 36-99% PR measurement range: 30-250bpm Automatic shut-off: About 20 seconds Working current: 20mA-130mA Operating Environment:Temperature:5 - 40°C; Humidity:<=80%; Atmospere: 50-106kPa Storage Environment:Temperature:-20 - 55°C; Humidity: <=93%; Atmospere: 50-106kPa Package Dimension:116*89*46mm Package Included: 1 x Pulse Oximeter 1 x User Manual Notes: 1. Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2. Please allow slight dimension difference due to different manual measurement.