A310 fingertip pulse oximeter,based on all digital technology,is intended for noninvasive spot-check measurement of SPO2 and pulse rate,the product is suitable for use in family,hospital(including clinical use in internist/surgery,anesthesia,pediatrics,intensive care and etc),oxygen bar,social medical organizations and physical care in sports,it also can use advanced software for sleep study and monitoring Product Description support 6 display modes(include big font mode) lightweight and easy-to-use color OLED simultaneously displays testing value and plethysmogram adjust the parameters in friendly menu manually adjust the direction of interface low battery voltage indicator visual alarm function automatically switch off while no signal standard two AAA1.5v alkaline batteries support more 30 hours continuous work advanced DSP algorithm inside decreases the influence of motion artifical and improves accuracy of low perfusion