Features for Fingertip Pulse Oximeter: <br><br>- Ergonomic design， special for children<br>- Comfortable for wearing<br>- Measure SpO2 and PR accurately<br>- LCD display SpO2 and PR， Pulse waveform and bargraph display<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>- Rechargeable button lithium battery<br>- High brightness can be used even in dark night<br>- Four viewing angles and six display modes<br>- Four levels adjustable brightness<br>- Low battery voltage indicator<br>- Automatic power off when signal is not available for 4 seconds<br>- Mini size， light weight， convenient to carry<br>Specification for Fingertip Pulse Oximeter: <br><br>Display <br>LCD display<br><br>SpO2 <br>Measurement range: 35～99%<br>Resolution: ±1%Accuracy: ±2% (70%～99%)， unspecified (<70%) <br><br>Pulse rate <br>Measurement range: 30～255 bpm<br>Resolution: ±1%<br>Accuracy: ±2bpm or ±2% (select larger) <br><br>Power<br>1.5V (AAA size) <br>alkaline battery x 2<br>Supply voltage: 2.6~3.6V <br><br>Working current <br>≤30mA <br><br>Interference resistance against ambient light <br>Deviation between SpO2 in nature indoor lighting condition and in dark room is less than ±1% <br><br><br>Package Content: <br>- 1 x RPO-50QA Fingertip Oximeter  <br>- 1 x Lanyard<br>- 1 x English user's manual<br>- 1 x Pouch<br /></p> <br /></p><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/5509453a52e4a10affc40473-1-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/5509453a52e4a10affc40473-2-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/5509453a52e4a10affc40473-3-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/5509453a52e4a10affc40473-4-original.jpg" alt=""width="800" noproxy><p style="text-align: center;"><img src="https://contestimg.wish.com/api/webimage/5509453a52e4a10affc40473-5-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;">