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.
Size:13cm
Package includes:
1 x Invisible Ink Fluorescent Pen

This magical invisible disappearing ink pen will write your secret message. Once your secret message has been written with this invisible ink pen, wait a few seconds to shine the light from the cap of the pen and reveal the secret of the secret message.
Harmless and tasteless ink, healthy toy for your kids! Smooth and colorful disappearing inks on T-shirts, paper, skin and any surface! Permanent but washable! Make surprises, reveal a top secret and brings you an amazing variety of fun activities such as stocking stuffer, treasure hunt,escape room,or classroom activity.
Kids will love these spy pens. Kids love using this kind of pen to keep their secret and play detective spy games. Invisible pen brings you an amazing variety of fun activities. From Surprise birthday parties, to revealing a top secret message to their parents or grandparents.as Birthday Gifts,Halloween Gifts,Easter Day,Valentine’s Day Gift,Christmas Presents for kids and friends.
The upgraded pens are now thicker for longer lasting fun!! Batteries included and installed. The barrel of the pens will come in a variety of colors to keep the activity exciting. The Color of the light is Blue and it will display the words written in clear ink.They each had a pull tab to save battery life. Please BE CAREFUL with small items:Children above 3 years.
We consider our customers as our top priority.Please contact us if there is any question or problem. We aim to please.

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!