STONEGO 1PC/2Pcs Magic UV Light Pen Luminous Light Invisible Pen Secret Learning Magic Pen for Kids
1. Invisible Writing: Send invisible messages and then make them visible again when you light the messages with UV light. This allows secret messages to be sent unrecognized.2. Safety: Harmless and tasteless ink, healthy toy for your kids! You can write anywhere: T-shirts, paper, skin. Permanent but washable!3. Playing Detective Game: Kids love detective games with these secret pins. Invisible Pen brings you a variety of fun activities like treasure hunts.4. Note: Please do not use on a special surface such as: glass or smooth plastic film, etc. Specification:Material: PlasticColor: Blue, Yellow, Purple, RedSize: 13.3cm/5.24inPackage Includes:1PC/2Pcs x Stonego Invisible Ink Pen (Battery Included)