Feature: new and high qualityThe vein finder can display the veins precisely and clearlyImproving the success rate of the first venipunctureShortening puncturing time, improving work efficiencyReducing the pain, anxiety of patientsReducing the risk of infectionStable and reliableEasy to carryEasy and convenient to useDurable in useSuitable for hospitals, pediatric clinics, outpatient clinic center, clinical laboratory, nursing homes etcAlso suitable for night hunting and pilot training, night photography for photographer, night land navigation map reading,astronomy and other nighttime activities etcPerfect for stargazing and map reading, volunteer working at night, seaing turtle night patrols in turtle season.Material:ABSColor:BlackSize:As picture shownHow to Use:1. Press the button on the bottom of the device to turn on the infrared LED2. Press gently on the skin with your hands and slowly move the device from one side to the other. Veins will appear as shadows or dark lines. (Note: The device must be in contact with the skin when looking for veins. Taking light out of the skin will not show anything.)3. Once veins are found (dark shadows/lines), relocate the infrared light around this area to get the best visual acuity. If the vein is shallower to the surface, the light source may have to be moved further because it may be too bright and cover the vein. It is best to follow the vein path so that you have a complete visual size and direction. (Note: It is best to find a vein that follows a straight road.)Package Included: 1 x Black Vein Finder Device(3 x AAA battery not included)Note1.Our size are Asian Size,1-2 size smaller than euro size,please choose your size according to the size chart.2.Due to the hand measurement, there have size error about 1-2 cm.Item color displayed in photos may be showing slightly different