Feature: 100% brand new and high quality The vein finder can display veins accurately and clearly Improve the success rate of the first venipuncture Shorten puncture time, improve work efficiency Reduce patient pain Reduce the risk of infection Stable and reliable Easy to carry Easy and convenient to use Durable in use Suitable for hospitals, pediatric clinics, outpatient centers, clinical laboratories, nursing homes, etc. Also suitable for night hunting and pilot training, night photography for photographers, night land navigation map reading, astronomy, and other nighttime activities, etc. Great for stargazing and map reading, volunteering at night, night patrols for sea turtles during turtle season. Description Material: ABS Color: Black Size: As shown in the picture How to use: 1. Press the button on the bottom of the device to turn on the infrared LED 2. Gently press the skin with your hands and slowly move the device from side to side. Veins will appear as shadows or dark lines. (Note: The device must be in contact with the skin when looking for veins. Taking the light off the skin shows nothing.) 3. Once veins are found (dark shadows/lines), move the infrared light around this area to get good visual acuity. If the vein is shallower to the surface, the light source may need to be moved further away as it may be too bright and cover the vein. It is good to follow the vein path so you have a complete visual size and direction. (Note: It is good to find a vein that follows a straight path.) Package Included: 1 x Black Vein Finder Device (3 x AAA battery not included) Note: 1. Our size is Asian size, 1-2 sizes smaller than European size, please choose your size according to the size chart. 2. Due to the hand measurement, there has a size error of about 1-2 cm. The color displayed in photos may be slightly different