Oxygen level in the blood to indicate changes due to heart or lung function, oxygen use by your body, or altitude.
Number of heart pulses per minute to indicate overall fitness or exertion levels at any time.
Strength of blood flow to the finger to indicate changes in blood circulation.
Number of breaths per minute to indicate how well your heart and lungs are functioning or how quickly you recover after exercise.
Variation in perfusion index over your breathing cycle, which may indicate changes in hydration, breathing effort, perfusion, or other factors
Compatible with iOS 9 and 10: iPad Air 2, iPad Air, iPad 4, iPad 3, iPad 2*, iPad Mini (4th generation), iPad Mini (3rd generation), iPad Mini (2nd generation), iPad Mini (1st generation), iPhone 7 Plus, iPhone 7, iPhone 6 Plus, iPhone 6, iPhone 5C, iPhone 5S, iPhone 5, iPhone 4S, iPod touch (5th generation)
|Manufacturer's Warranty||2 Year Limited Warranty|