iProven OXI-27 Pulse Oximeter Fingertip O2 Saturation Monitor - Finger Pulse Oximeter - Measure O2 Saturation Levels. THE PERFECT PULSE OXIMETER FOR EVERY ATHLETE - If you are a sports fanatic, our pulse oximeter fingertip OXI-27 will give you helpful insights into your O2 saturation levels and pulse rate. Understanding your measurements will be a big step towards reaching your fitness goals. YOUR OXYGEN SATURATION AND PULSE RATE IN ONE DEVICE - Our device is precision-engineered to measure both the Oxygen Saturation Levels in your blood, and your Heart Rate. It is especially designed to help you understand and improve your fitness levels. NEVER WORRY AGAIN ABOUT YOUR NUMBERS .