... , pulse oximeter CE certified 2, OEM brand accept 3, SpO2 and pulse monitoring, and histogram of pulse display Technical Specification:1, Display Mode: LCD Display SpO2 ... : 2.6V—3.3V4, Operating current: < 10mA5, Resolution: SpO2 + 1%, Pulse rate: + 1 bpm6, Accuracy: SpO2 + 2% (during 80%--99%) and + 3% (during ... , A hanging rope2, Four batteries3, A pouch4, A User Manual pulse oximeter