... (JAX-204)FeaturesIntegrated with SPO2 probe and processing display moduleCan be used in:hospital,home,community medical ... SPO2 and PR accuratelySPO2 and PR display,PR waveform and bargraph display with USB port.low Battery voltage ... ,convenient to carryTechnical Parameters1.3'' double color OLED display,resolution 160*64SPO2:35-99% Pulse Ratio:30 ... perfusion FDA approved pulse oximeter with LED display