Color-Coded Oxygen Level Monitor

The fast, easy way to monitor blood-oxygen level and pulse rate! In addition to numerical values, this meter displays colors (green, yellow and red) for at-a-glance readings. Produces results in 10 seconds or less. Simple, 1-button operation, with optional alarm function. Case included. Auto shutoff. Uses 2 AAA batteries (not included). 2.5″ l x 1.75″ w x 1.25″ h.