SM-110 Pulse Oximeter is one of the best devices to check the instant saturation levels of the oxygen of arterial hemoglobin (SpO2). The device can be used to measure the readings of pediatric, adults, and it is also widely used in the clinic, family, and even in the hospitals. The PR and SpO2 are displayed on the screen and the other features include the light weight and compact body. The device also indicates for low consumption of power and there are two AAA batteries that can operate for not less than 30 hours. The LED device is great to use as the AAA batteries that are used can be recharged.