Invisible Ink Pen With Uv Light - Secret Magic Ballpoint & Adults. Introducing Our Innovative Invisible Ink Pen, Designed for Those Who Value Privacy and Creativity. This Versatile Pen Allows You to Write Secret Messages That Remain Invisible to the Naked Eye, but Can Be Revealed with the UV Light. Perfect for Personalizing Items or Adding a Layer of Security to Your Written Communication. This Lightweight, Portable Pen Works on Various Surfaces Including Paper, Skin, Walls, Wood, Metal, and Cloth, Making It Incredibly Versatile and Practical. Crafted with a Sleek Silver Plastic Shell, It Features a 0.7mm Tip for Smooth Writing. The Built-in UV Light Ensures That Your Hidden Words Are Easily Revealed when Needed. Features: - Invisible Ink for Secret Messages - UV Light to Reveal Hidden Writing - Usable on Multiple Surfaces: Paper, Skin, Walls, Wood, Metal, Cloth - Lightweight and Portable Design - Sleek Silver Plastic Shell - 0.7mm Writing Tip for Precision - Built-in 3 AG3 Button Cell Batteries Included.