The Rossmax SB100 is a portable medical device used to measure the oxygen saturation level (SpO2) and pulse rate of an individual. It is commonly used in hospitals, clinics, and home healthcare settings. The pulse oximeter uses a sensor to measure the oxygen saturation level in the blood, which indicates the percentage of oxygen bound to hemoglobin. It provides a quick and non-invasive way to monitor oxygen levels. The device is compact in size, making it easy to carry around. It is powered by batteries, making it convenient for use on the go or in remote areas.