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 considered low resulting in hypoxemia.[1]Blood oxygen levels below 80 percent may compromise organ function, such as the brain and heart, and should be promptly addressed. Continued low oxygen levels may lead to respiratory or cardiac arrest. Oxygen therapy may be used to assist in raising blood oxygen levels. Oxygenation occurs when oxygen molecules (O2) enter the tissues of the body. For example, blood is oxygenated in the lungs, where oxygen molecules travel from the air and into the blood. Oxygenation is commonly used to refer to medical oxygen saturation.