I had the opportunity to receive Easy@Home Areta Fingertip Pulse Oximeter in return for my unbiased review. Easy@Home Areta Fingertip Pulse Oximeter is easy to use, even for those that are not in the medical field. FDA approved, it's a great product to keep on hand if you have little ones, children or family members with respiratory problems such as asthma, BPD or COPD. You simply place the oximeter on a finger and within seconds, you have readings of both your pulse rate and oxygen. The display is large an easy to read. I'm a pediatric nurse and compared to the oximeters used at work, this is very accurate. It fits both children and adults. It's comfortable and doesn't pinch your fingers. I love the quickness of the readings for little, fidgety fingers. When I'm working and I have to check an oxygen reading on an infant or crying toddler, it can be a challenge to get an accurate read. I've used this oximeter at work and it's much nicer than the large, bulkier oximeters. There is an audible alarm that you can set to alert you of abnormal levels. You can also mute the alarm if you don't want to use it. It comes with a very nice case and neck/wrist cord. Overall, this is a very nice, durable pulse oximeter and I highly recommend it. You can find out more about Easy@Home Areta Fingertip Pulse Oximeter @ http://www.amazon.com/gp/product/B00TP1NEGM/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1.