Nonin is a well-known name in pulse oximetry. Carrying products for home and clinical use, Nonin has a product for everyone. The Nonin Go2 Achieve fingertip pulse oximeter is a new a non-prescription pulse oximeter, perfect for anyone interested in monitoring their oxygen saturation while running, hiking, mountain climbing, or any at home monitoring without a prescription. The Nonin Go2 allows you to go further with accuracy up to 30,000 feet and up to 1600 spot checks per battery. Nonin also carries clinical pulse oximeters including the Onyx, Onyx II and Onyx II with Bluetooth. These clinical oximeters offer up to 2500 spot checks per battery change and fit pediatric to adult size fingers. .