Get Your Pulse Oximeter Readings w/Carry Case and Lanyard

This pulse oximeter is comfortable, lightweight and may be easily carried with you wherever you go to get your pulse oximeter readings quickly. The display is large and well lighted for easy viewing. Batteries are included, Simply pinch open the probe, place your finger inside, turn it ON with the press of one button, then read the display to know your oxygen saturation, and pulse rate. Oxygen sensor, pulse oximetery, oxygen saturation reading. Secure Checkout with Visa MasterCard or Amex.  All Shipments can be tracked by using USPS, FEDEX, or UPS.  from wikipedia: Blood circulation: Red = oxygenated (arteries), Blue = deoxygenated (veins) Oxygen saturation is the fraction of oxygen-saturated hemoglobin relative to total hemoglobin (unsaturated + saturated) in the blood. The human body requires and regulates a very precise and specific balance of oxygen in the blood. Normal blood oxygen levels in humans are considered 95–100 percent. If the level is below 90 percent, it is con