The SPECTRO2 20 Pulse Oximeter is an easy-to-use spot-check device that displays %SpO2, pulse rate, signal strength, and Pulse amplitude Index (PI). Utilizing patented BCI Serial Autocorrelation technology, this device responds to challenging environments - including those with the presence of low perfusion or motion. The SPECTRO2 20 Pulse Oximeter aids health care providers in responding to a wide range of patient needs, including higher acuity care and ambulatory situations.