Color-Coded Meter Tracks Your Oxygen Levels with the Push of a Button
Simply place your finger in our Oxygen Meter and press the button. In seconds, the color-coded readout quickly shows your pulse oxygen saturation rate (SpO2). Green is normal, yellow indicates caution and red means warning low oxygen levels. Uses two AAA batteries(not included). 2 3/5" x 1 1/3" x 1 1/3".