The Braun Pulse Oximeter 1 YK-81CEU is a reliable fingertip oximeter that uses infrared sensor technology to accurately monitor blood oxygen levels. Its digital display and wireless connectivity make it easy to use and convenient for everyday monitoring. With a sleek black design and a manufacturer warranty of 1 year, this product is a trustworthy choice for anyone looking to keep track of their oxygen saturation levels. Powered by batteries, the Braun Pulse Oximeter 1 is a quality monitoring device from a well-known brand in healthcare technology.