The Med-Ox Fingertip Pulse Oximeter is the oximeter you need if you're on a doctor advised exercise regimen. Med-Ox is an easy and efficient way to monitor heart rate and O2 saturation throughout the day or during physical activities. Place it on your fingertip and you'll always know when you need to increase litre flow. Small and light, the Med-Ox will check your blood oxygen levels and heart rate, without interfering with your normal activity.