FINGERTIP PULSE OXIMETER Parameters: Two parameters:SPO2, Pulse Rate. Waveforms: SpO2 Waveform. Features: 1 COLOR OLED display, four direction adjustable. 2 SpO2 and pulse monitoring, and Waveform display. 3 With menu operation. 4 With beep and alarm. 5 Low-power consumption, continuously work for 50 hours. 6 Small in size, light in weight, and convenient to carry. 7 Low voltage alarm display, Auto power-off. 8 Runs on standard AAA batteries. Detailed descriptions of product functions: SPO2: 1 Measurement range: 70%-99% 2 Accuracy: �±2% on the stage of 70%-99%, unspecified(