Tegeme 8 Pcs Black Light Flashlight Invisible Ink Pen, Black

About this item

• Invisible Ink Pen Set: you will receive 4 invisible ink pens and 4 mini UV flashlights ( batteries not included) for secret message fun secret notes party favors and birthday gift use at home events or gift boxes
• Write Then Reveal：write a message using the invisible ink pen, then shine the UV flashlight on it to make the content appear (need viewed in a dimly lit environment); It is a simple and fun way to interact, adding an element of surprise to notes, games, and creative moments
• Portable Use: the mini blacklight and disappearing pen format fit easily in bags, desks, and gift boxes for portable LED penlight use, back to school fun, and light activity play
• Fun for Groups: great for spy games treasure hunt activities secret notes and surprise messages The compact blacklight pen set is easy to carry store and use for quick setups
• Usage Instructions: while our invisible ink marker add fun and functionality to your life, it's important to note that they are invisible/ colorless in normal light, and to witness the glowing effect you must have a dark light; Tips: the long flashlight requires 2 3A batteries, the short flashlight requires 1 3A battery, the batteries are not included