High Power Red LED: Nine circular red LED lights help locate veins quickly and easily. Blood naturally absorbs this frequency of light, making veins more visible through the skin. Easy to Find Vein: Gently press the skin and slowly move the device from side to side. Veins appear as shadows or dark lines at the periphery of the red light. Easy to Carry: This vein finder viewer is slim and compact, ideal for portability. It can be carried in a bag or pocket and is convenient for use at home or on the go. Application Situations: Suitable for use in pediatrics, oncology, radiology, emergency, geriatric, laboratory, surgery, outpatient, plastic, vascular, and other clinical settings. Applicable People: Designed for individuals including infants, children, patients with obesity, and those with dark or hairy skin on areas such as the forehead, hands, arms, legs, and face. 1 x Vein Finder Viewer