Trueview i31 - 30 to 220 bpm Pulse Oximeter - It is mainly used in clinics, hospitals, first aid and home care institutions, etc. It comes with new, high tech, colour display known as organic colour led. It is user friendly that has a comfortable hand grip to hold the device properly. It has an auto power-off option with a multi-direction display. It comes with a low power indicator and oxygen saturation.