Invisible Ink Pen with Ink Revealing Blue LED (3*AG3)

Pros: Very good bright LED light.
Amazing price, when you use BulkRate it is cheaper.
You get three extra baterries!!!
Ideal gift.
Battery last long too.

Cons: Built quality isnt bad, but it can be better.
it could be in more colours. Sometimes you get better piece, sometime worse (I'm talking about built quality).
Ink can be brighter

Other: Very good for kids. You can write secret messaged for them, for you friend, boyfriend, girlfriend etc. Suitable for cheating during school tests. ideal gift

Pros: Looks like simple pen!
Works great! Messages are really invisible until you light the UV LED
Useful for cheating at school!

Cons: Button clicks abit loud (Not ideal if you want to cheat on exams =)
I thought it is metallic, but it is plastic, nevertheless it is not a problem

Other: Why DX require to write at least 500 characters reviews? I don`t know what to say more about this item =)

Pros: I bascially bought this pen for fun. I was curious as to whether it would work and it does! It is surprisingly effective. You can use it on all different colors of paper. Once you shine the light on the invisible ink it shows up! The pen is very pretty and nice. It looks quite expensive!

Cons: I wouldn't cheat using it although some people could. I am not sure how I will use it but you never know when it might come in handy!

Other: A cute and fun gift item and fun to have on hand! I'd say it is worth it!

Pros: -First of all the writing is really invisible
-The pen has a very strong light (you just need to press a button.
-It comes with three spare batteries

Cons: -It took reeeeeeeeeeeeeealy long to ship (4-5 weeks)
-It is made of plastic not metal as it may look like in the picture.
-It took me a long time to put the batteries on the right side (they keep falling upside down).

Other: - It's a really nice pen, looks like a real pen so it's useful for cheating :D
- I would recommend this pen to anybody. Plus it makes a great gift :)

Pros: Quite nice pen in overall. What i liked the best about it, is its price. Comes with two battery sets. Works well.

Cons: The build quality is not bad, but on a closer look pen looks kind of cheap. The button of the uv light is quite flimsy, so the light flashes sometime (maybe it's just mine). It's not invisible on all surfaces, you can see greenish trace under some angles.

Other: I cant think of practical use of this pen (just wanted one to have). But some may use it in school or to mark personal things, or something else.

Pros: You can write your diary. You can write your kiss and phone# on a banknote and try to meet beautiful saleswomen)) You can use this as money-detector

Cons: When you write it stays visible scratches on paper. This is not a soft ball-point pen(

Other: Good gift. Nice toy. Strong UV money-detector. Can help to get led sometimes, i think))

Pros: - Work very well
- Useful to play joke or to surprise your friend
- It has already the battery in the pen but there are also another set of battery in the package
- It cost less than 2 dollar!

Cons: - Full made of plastic
- Poor quality material
- Obviously nonrefillable

Other: Cheap and funny.. but useless..

Pros: -Comes with 6 batteries (3 already inside, it comes working, and 3 extra) -Looks like a normal pen -UV Light isn't that strong, so it might be imperceptible during tests, but I wouldn't advise anyone to cheat (I never did).

Cons: -The ballpoint doesn't fully retract, which makes me think the ink might dry out eventualy with no use

Other: Overall a good think for its price.

Pros: - The ink is undetectable to the naked eye on some surfaces (elastic substances such as skin, erasers, etc.) - At first glance it does actually look like a real ball-point pen - Comes with spare batteries - Low price

Cons: - Doesn't feel that sturdy - The ink can be seen on normal paper under certain light - The pen leaves a wedge (on the paper) while writing due to the sharp point

Other: It's a fun little cheap gadget that will bring you some entertainment. However, this pen will not help you in any extreme espionage.

Pros: Kids will have hours and hours of fun with these.Adults will have fun with the ink as well, but the led is great for money detection as well. The light that comes from the bulb is very bright compared to a few others that I have gotten in the past.

Cons: Different colors would be a better option. The design on the pen itself is for girls, of very young boys.Although the led end can be carried without the pen after the ink has run out, to be used for money dectection.

Other: For this price just get at least one. You will have fun with it for a long time. You never know when you can use something like this?