APP Bluetooth Pulse Oximeter Model M500 • Parameter Specifications • SpO2 Range: 35%～100％ Resolution: 1% Accuracy: 2% (range 80%-100%), 3% (range 70%-80%), unspecified (﹤70%) • Pulse Rate Range: 25bpm / min ～250bpm / min Resolution: 1bpm Accuracy: 2bpm Normal 3bpm Motion/low perfusion • PI Range: 0～30％ Resolution: 1% (range 0-20%), unspecified ( 20%-30%) • Features •Share up to 12 hours of measurement history via .csv file •Suit for Android or iOS mobile phone • Portable, lightweight • Easy change language to meet mobile phone. • Automatically connect APP without PIN code by Bluetooth4.0 • Easy change sensor for