For better or for worse, this ultra violet flashlight by 711-TEK performs very capably. I'm worried it might provide TOO much information! My two sons and I had an afternoon of discovery experimenting with what will and will not glow under this black light. So far, tonic water and urine come out the brightest. The flashlight itself is about six inches in length and requires 3 AA batteries, not included. I did recieve a promotional offer to try this product from Rank-Booster.
We value your privacy
We use cookies for essential functionality and, with your consent, for analytics and marketing. Cookie Policy · Privacy Policy
Choose which cookies you allow. Essential cookies are always on.
Session, security, authentication. Required for the site to work.
Referral tracking, language preferences.
Google Analytics, session recording. Helps us improve the site.
Facebook Pixel, advertising, remarketing tags.