Feature:Color: BlackSize: 95x29mm1. One of the most challenging aspects of blood collection is locating a suitable vein. Some patients are considered difficult; their veins may be small or deep, making it hard for healthcare professionals to identify an appropriate site quickly.2. Repeated attempts can cause discomfort and may affect patient confidence in the phlebotomist.3. This device is designed to assist in visualizing veins, making it useful for small clinics, medical professionals, and general use. It helps locate veins with fewer attempts.How to use:Step 1: Minimize ambient light. A dark environment provides optimal results. Press the button on the bottom of the device to activate the infrared LED.Step 2: Apply gentle pressure on the skin and slowly move the device across the area. Veins will appear as dark lines or shadows at the edges of the red glow emitted by the device. Note: The device must remain in contact with the skin to function properly. Results will not be visible if lifted from the skin.Step 3: Once a vein is located (shown as dark lines), adjust the device around the area to achieve the clearest view. For superficial veins, slightly increase the distance between the device and skin if the light is too bright. Follow the vein’s path to assess its direction and length. Note: It is best to select a vein with a straight path.Includes: 1x Black Vein Finder Device (3x AAA batteries not included)