Gammaeon Invisible Ink Pens, Multifunction Security Marker LED UV Light Magic Marker Ballpoint Creative Secret Pen Office Supplies

DUAL FUNCTIONALITY: Features both invisible ink that can only be seen under UV light and a regular ballpoint pen function for versatile writing needs UV LIGHT INCLUDED: Built-in LED ultraviolet light on pen cap allows for easy reading of invisible messages in dark conditions SECURITY FEATURES: Perfect for marking valuable items, writing confidential notes, or creating fun secret messages that remain hidden until revealed PRACTICAL DESIGN: Comfortable grip and smooth-flowing ink ensures consistent writing experience in both visible and invisible modes