Feature: 1. High Performance Red LEDs: 9 round red LEDs help you find the vein path quickly and easily. Easy to use, just press the button on the bottom of the vein detector. 2. Application: For nurses, paramedics and medical students to help locate veins and reduce painful venipuncture attempts. 3. Lightweight Design: Easy to carry, which makes it a very useful gadget for traveling doctors and nurses to provide help at home. Suitable for hospitals, pediatric clinics, outpatient centers, laboratory, nursing homes, etc. 4. How to Use: Gently press your hand against the skin and slowly move the device from side to side. Veins will appear as shadows or dark lines and appear on the periphery of the red light around the device. 5. Battery Powered: Powered by 3 AAA batteries (not included), can be used anywhere in the home, office, indoors and outdoors, no outlets required. Specification: Item Type: Infrared Vein Finder Weight: 62g / 2.19oz Material: Aluminum Power Supply Batteries: 3 x AAA Batteries (Not Included) Light Source: Red Use: Vein Viewer, Red Physical Therapy. Package List: 1 x Flashlight