Systems often produce bad data, requiring a complex recalibration process. The monochrome display is tough to read at an angle. Users must pore through reference manuals to memorize the buttons to use.
Recalibration takes one push of a button. Fewer buttons are required to monitor 12 blood values vs. the old design's six. The readings are color-coded--red for blood coming from arteries, blue for veins. Training time is reduced.