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 surrounding the device. 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 outdoors. Application Situations: Widely used in pediatrics, oncology, radiology, emergency, geriatric, laboratory, surgery, outpatient, plastic surgery, and vascular procedures. Applicable People: Suitable for infants, children, obese patients, and individuals with dark or hairy skin on areas such as the forehead, hands, arms, legs, and face. 1 x Vein Finder Viewer