The S90 Express multi-parameter patient monitor features a 15-inch TFT that displays 10 waveforms and high-end parameters such as EtCO2 (side stream, micro stream and main stream), multi-gas/O2, etc. It offers a maximum 168-hour trends review with a pitch tone for audibly recognized SpO2 and comes with powerful software features such as OxyCRG, large fonts, short trend, and drug calculation.