Features: Red LED light can quickly help adults or babies find veins easilyhow to use:Note: The device must be in contact with the skin when looking for veins. Taking the light out of the skin doesn't show anything!Step 3 Once the vein is found (dark shadow/line), reposition the infrared light around the area to obtain significant vein vision. If the vein is more superficial to the surface, it may be necessary to move the light source further because it may be too bright and cover the vein. Follow the vein path so that you have a full visual size and orientation. Note: Find a vein that follows a straight path.[LED Specifications]: 9 F5 round red LEDs[Power Specifications]: 3*AAA (ie, 3 7-cell batteries, not included in the product)[Switch gear position]: one file (one open and one off)Package Including:1PC
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