12 Invisible Ink Pens with UV Spy Markers - Secret Message Magic Bookmarks, Treasure Prize Box for Kids' Party Gifts

Brightness: 13.4 centimeters Weight: 11 grams Subtitle: ABS Pen refills: Use

characteristic: This spy pen allows you to write secret information that can only be revealed by built-in ultraviolet light! This invisible ink spy pen is the perfect gift for children. They can use ultraviolet pencils to discover secret information. Children enjoy forensic spy games, and these pens are the perfect addition to any spy collection box. 4. Turn on the light at the writing point and see how magical the information looks! 5. A perfect party gift that allows your child to truly be creative in writing, sketching, and drawing. 6. The UV safety light pen can be used to check for watermarks on banknotes and other documents Invisible marking of files or banknotes or writing of 'secret' information. The perfect little spy is in his home! This package includes 12 UV invisible ink spy pens (including batteries) Please note that: 1. It is non permanent ink 2. Pull the safety tongue before the first use Due to manual measurement, the allowable error is 0-1cm. Before making a bid, please make sure you don't mind. Due to differences between different monitors, the image may not reflect the true color of the article. Thank you, OP!