Pros: It writes on just about anything. It definitely can't be seen by normal light, but is easily seen when using the black light on the end of the pen. You can see the writing with the flashlight even in brightly lit rooms. Cons: Hard to see outside. Cheap plastic, could easily break. Other Thoughts:... Read more
Quando chega a algumas superfícies especiais, como camisetas brancas, dentes ou tintas fluorescentes, a luz ultravioleta é refletida em uma forma visível para o ser humano. Por isso essas superfícies parecem brilhar mais que as outras quando estão sob luz negra. Read more
Is great to impress your friends, write some "secret messages". Pros: -The ink is totally invisible until you light it with the UV light.
-Cheap and easy of use, do the work. Cons:
-After something the ink can become a little bit visible in paper. Read more
Loved the product, got quiet here in Brazil. I recommend!
It is perfect to you to analyze the false money, and write and display a Great laze it contains, congratulations liked the product. Easy to use and very objective.. Read more
Does what it says.
comes with batteries and everything you need to use it.
very easy to use and handle.
You can use it to write passwords in certain locations. Very childish design.
Batteries down't last too long. *Most important - if you look well on your writing ... Read more
I absolutely love these things!! They are so fun and simple to use! Both kids and adults love it! Great for secret messages. Work on skin and paper. Even great for couples ;] The battery runs out a little fast. But since they're so cheap - just buy 3! :D Always remember to put the cap back on when you'... Read more
The ink is really invisible without the light. The light is strong and with it the ink stands out great. The pen have a good grip and it's almost the size of a ordinary pen (except for the light part, which is a little... fat). None that I can think of. Actually, the only thing about it I don't like ... Read more
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