finger pulse oximeter CE approved facility accuracy Finger pulse oximeter Specification:Display 64K color OLED SpO2 Measurement range: 35~99% Resolution: ± 1% Accuracy: ± 2% (70%~99%), unspecified (<70%) Pulse rate Measurement range: 30~255 bp Beijing Firstbeauty Medical Device Co.,LTD.Mobile:86-18901100299 TradeManager:cn220257161; AIM: angelahitforyouWebsite:www.thefirstbeauty.com