OLV-3100 is a highly accurate desktop pulse oximeter. This compact unit has a large trendgraph and numerical data display. The high performance unit measures SpO2 against body movement, small amplitude pulse waveform, and external noise such as electric blankets, fluorescent lights and ESU. It is capable of storing information in its memory for up to 24 hours. The OLV-3100 device can be used with either reusable or disposable BluPRO SpO2 probes and, by connecting two OLV-3100 units together, it can highlight the difference of SpO2. It can be operated by battery power for four hours, enabling emergency usage or transportation.