Pulse Oximeter is a compact and light-weighted oximeter that non-invasively monitors the degree of oxygen saturation of the patient's haemoglobin and pulse rate. It delivers an estimated SpO2 measurement range of 0–100% by determining the absorption of two wavelengths of light (660 nm [red] and 940 nm [infrared]) by blood. With an enhanced eye monitoring feature for visual observation, working parameters are easily visible on LED screen. Pulse Oximeters are used from homes to ICUs. It can be used to improve quality of care in patients with respiratory and circulatory disorders, in particular those with the coronavirus disease (COVID-19).