Deluxe pulse oximeter with outstanding features. Accurately measures oxygen saturation of arterial hemoglobin and pulse rate with a wide range of finger sizes from pediatric to adult. Dual color OLED display with adjustable screen brightness. Display Blood-Oxygen Saturation (SpO2), Pulse Rate and Pulse Bar. Six display modes with adjustable brightness. Low battery indicator with automatic shut-off. 2 AAA batteries included. Adjustable neck strap with quick release lanyard. Complies with IEC60601-1-2 for electromagnetic compatability Class B. Includes detailed illustrated English/Spanish instructions and a 2-Year limited warranty.