5 x UV Ink Permanent Marker Pen. Ultra Violet Security Markers. Complimentary UV Blacklight LED Light Torch.

this is a great product for security use for your everyday products, the light lasts a very long time (i've had it over a year and it still doesn't need a battery change), the pens writing starts disspear as soon as you write the words you need to write and the light shows up the writing clearly again, you wouldn't even think you've wrote something there to begin with, have your stuff marked with you unique logo or number in case theives take your items, you can easly identify your stuff again with the shine of the torch, great product, fast delivery, i would recommend buyer to anyone.

Does the job well - dont really need more than 1 pen, so passing the spares to friends and family

I work in a school and my students mostly received expensive smartphones and high value earphones for Christmas. I offered them security marking in case of loss as there were a few misunderstandings over similar looking equipment - No one wanted to "mark" their pristine equipment - so using this "invisible ink" has been very popular. The pens are easy to use and after a few minutes leave only a residual mark that needs scrutiny to be seen under normal light. Under UV or "black light" the marks can be seen easily. Even after one student washed the equipment with soap and hot water so they could not see the residual outline of the marks; the ink was still clear under the supplied UV light. You get a lot of pens for your money here but the little UV light is not great - it does the job but is too easily lost. However I have a much larger light in the school for checking found items and claims of students to their equipment. Overall I would be happy to buy this again and recommend that every school purchase similar items as it has solved a number of issues before they became real problems.

Good

A must have for the security conscious amongst us. Great for peace of mind and marking useful info on items discretely. Good quality and delivered fast.

very handy your items can be safely be marked as you want invisible to the naked eye and small torch for reading your marked items is included

The pens are good but the little torch is absolutely garbage. You've got to really press it in at both sides to make it light up and even then it's really weak and for someone who struggles to grip its not good. I thought it would have have a button to turn it on and off.

These markers work great and are a well priced. However I have tried better security pens. These other pens are considerably more expensive (£13 per pen) which have better results. However the results are close. On paper there is a slight resin that can be clearly seen that gives it a slight yellow discolouration on other surfaces I experienced no issue though. The light it comes with is handy and i keep it with me now when i don't want to carry a full UV light. Great starter item.