Feature:

Fine point marker, is loaded with special ink that is only visible under UV light.

It includes a mini LED UV black light with batteries, so you can view your messages.

Lamp holder is a purple yanchao lights, write can`t see A photo with purple lights will be displayed

Students can use the pen mark important information in the text books, in order to more efficient to complete the review your lessons.

Perfect  for your Record the confidential information.




Package includes:
4/6/8/12 x Invisible Ink Fluorescent Pen

Note:
No retail package.
Transition: 1cm=10mm=0.39inch
Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.
Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!