Pulse oximeter is a very important and common device to check patient pulse blood oxygen saturation (SpO2) level and pulse rate. As a portable, compact, simple, reliable and durable physiological monitoring device the handheld pulse oximeter MD300A can greatly enhance patient care. It is widely used in clinics, hospitals and care environments. High resolution LCD displays SpO2, PR, waveform and pulse bar Audible and visual alarms; battery-low indicator 24-hour datastorage and review Convenient clinic operation Rubber jacket provides external protection 4 AA alkaline batteries Suitable for adult and paediatric use