The CMS50EW Pulse Oximeter uses the principle of Photoelectric Oxyhemoglobin Inspection Technology adopted in accordance with Capacity Pulse Scanning and Recording Technology. The device can be used in measuring the pulse oxygen saturation and pulse rate through finger. It is suitable for family, hospital, oxygen bar, community healthcare, physical care, sports use (not recommended for use during sports activity, it can be used before or after doing sports) and more. The device is lightweight and convenient to carry. Operation is simple and it has low power consumption. It displays SpO2 value, Pulse rate in a bar graph, pulse waveform and battery capacity with sound indications and alarm functions. Device has automatic power off function when under the state of measuring interface. Real-time or stored data can be transmitted or uploaded to a computer.