Common, yet important device for checking patient SPO2 (blood-oxygen saturation) and pulse rate. Small and lightweight (28g without batteries). Digital LEDs display, low power consumption. Display SPO2, PR and pulse bar. Automatically powers off, indicates low battery. Two AAA alkaline or rechargeable batteries. Accommodates widest range of finger sizes from pediatric to adult. Dimensions: 2.25"L x 1.25"W x 1.5"H