OXIMETER, PULSE SMARTHEART DELUXE (24/CS) Accurately measures oxygen saturation of arterial hemoglobin and pulse rate Displays Blood-Oxygen Saturation (SpO2), Pulse Rate and Pulse Bar Accommodates a wide range of fingers sizes, circumference approximately 20–75mm, user weight approximately 33 lbs ~ 242 lbs (15KG~110KG) Automatic rotating display with 4 display modes Dual-color OLED display with four display modes No prescription required Low battery indicator Automatic shut-off Includes: pulse oximeter, canvas storage pouch, lanyard, two AAA batteries and detailed English/Spanish instructions 2 AAA batteries included Suitable for wide range or finger sizes from pediatric to adult