Easy and accurate way to monitor blood oxygen saturation levels and heart pulse rate. Ideal for any situation in which a fast measurement of vital signs is needed. Anti-motion technology takes readings even with slight movement. Bright, 2-color digital OLED display. Automatically takes readings when finger is inserted. Read from 2 directions. Plethysogram display. Switchable to perfusion index percentage display. Fits adults and children. Auto power off when finger is removed. Includes 2 AAA batteries, case and lanyard. Retail packaging. Latex Free.