Accurate and Reliable - The Innovo iP900AP Finger Pulse Oximeter is a premium model with an improved LED and sensor, allowing SpO2 and pulse rate measurement even at low blood perfusion. Consistently beat other pulse oximeters in clinical studies Plethymosgraph and Perfusion Index - Ensure accurate SpO2 and Pulse Rate readings. Eliminate doubts about reliability or reading issues. Upgraded Hardware and Software - Enhanced performance with internal upgrades. iP900AP model includes auditory alarm, pulse detection beeps, and adjustable display brightness. Sports Enthusiasts, Aviation or Home Use - Ideal for climbers, skiers, bikers, aviators, and on-the-go SpO2 and pulse rate tracking. Use pre or post-exercise. Remain still during measurement Ready to use out of the box - Include 2x AAA batteries and a lanyard for convenience.