Pulse oximeters measure blood oxygen saturation in a non-invasive and continuous manner. Handheld pulse oximeters are designed with efficiency and portability in mind, making them convenient and beneficial for patients with respiratory or cardiac problems, especially chronic obstructive pulmonary disease. Because oxygen saturation is now considered to be the fifth vital sign in many medical institutions home monitoring has played an essential role in treatments and evaluation for supplemental therapies. The best pulse oximeter features simplicity of use, and the ability to support continuous oxygen saturation monitoring which is crucial for infants and individuals with respiratory or cardiovascular conditions. If you or your loved one is suffering from any such health problem or if you have a baby in the house, keep your family safe with a home pulse oximeter. Invest in peace of mind... buy a portable pulse oximeter.