The Inspired Essentials Pulse Oximeter Finger Pulse Blood Oxygen SpO2 Monitor - Perfect for Exercise Enthusiasts and Athletes Our Oximeter is one of the latest in a line of high-quality medical instruments, carrying a tradition of excellent designs and reliable product builds. It is one of the best values available for a pulse oximeter purchase (list of features and specs provided below). Features: -SpO2 and Pulse Rate are graphed on the bright LED display. The LED display cover prevents ambient light washout, making readings crisp and clear. -Conserving battery life with an auto-off feature when a user's finger has been removed for more than five seconds enables you to perform over 40 hours of continuous operating time with two AA batteries (included). -View Pulse Intensity with a Bar-graph and Pulse Rate with the Pulse wave on the LED screen. -This FDA-approved device offers speed and ease of use at an affordable price. Includes: AccuMed CMS50D1 AAA Batteries Lanyard Instruction manual 1 Year UK Warranty provided