Technical Parameters<br> Display Mode:  Color LCD Display,the display direction can be changed SpO2,Pulse rate,Pulse bar,waveform(4 display modes) <br> <br> SpO2 measuring range: 0%-100%<br> <br> Accuracy: When the SpO2 measuring range is : 70% to 100% ,the permission of absolute error is (±)  2%; below 70% unspecified  <br> <br> Resolution: SpO2: 1% Pulse Rate: 1bpm<br> <br> Pulse Ratio: 30-250 BPM<br> <br> Measurement Performance in Weak Filling Condition: SpO2 and pulse rate can be shown correctly when pulse filling ratio is 0.4%, SpO2 error is (+, -)4%, pulse rate error is ±2bpm Or 2%(select larger).<br> <br> Resistance to surrounding light:The device between the value measured in the condition of man-made light and that of darkroom is less than (±)1%<br> <br> Alarm function:Detected data going beyond limit alarm (when the SpO2 is below 90%,or the pulse rate is not between 50bpm and 120bpm, the alarm occurs);Low power alarm<br> <br>Safety Type:Interior Battery,BF Type<br> <br> Storage Environment:Temperature:-40ºC~+60ºC;Relative humidity:5%-95%;<br> Operative Environment:Temperature: 10ºC~40ºC; ;Relative humidity:30%-75%;<br> Power supply requirement:3.6V DC~4.2VDC<br> Battery requirement:3.6V rechargeable buttony lithium battery (1 unit)<br> Dimensions:46(L) × 40(W) ×29 (H) mm<br> Weight:About 35g (with 3.6V rechargeable buttony lithium battery )<br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56472b55fe1176129cad1e96-1-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56472b55fe1176129cad1e96-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56472b55fe1176129cad1e96-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56472b55fe1176129cad1e96-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/56472b55fe1176129cad1e96-5-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;"><p style="text-align: center;">