Tegeme 10 Pcs Blacklight Pen Set - Invisible Ink Pens & UV Flashlights for Spy Games

Glowing secrets for parties and family fun

Meet the Tegeme 10 Pcs Blacklight Pen Set, a playful toolkit designed to spark curiosity and connection at gatherings. The set pairs five compact UV flashlights with five invisible ink markers, letting you write messages that stay hidden in ordinary light and appear only when illuminated by a black light. Each piece is sized for comfortable handling—pens measure about 5.7 x 0.4 inches and flashlights about 3.4 x 1 inch—so they slip easily into pockets, gift bags, or game kits.

Built to last, the UV flashlights feature a waterproof, impact-resistant aluminum alloy body, so you can bring them along on outdoor adventures or rainy day parties. The pens use washable, safe ink and sit inside a sturdy plastic housing, giving you confidence while you create hidden notes, clues, and prompts that children and adults alike can discover together.

How it works

In normal light, the ink appears colorless and nearly invisible. When you shine the included UV light across the page, the writing lights up with a distinct glow, revealing your secret message, clue, or doodle. This effect is ideal for detective themed games, treasure hunts, escape room style challenges, and lighthearted surprises during gatherings.

Versatile and practical

Beyond play, these tools have practical uses around the home or classroom. You can mark items during a scavenger hunt, label notes during activities, or use the glow to add a fun element to routine tasks. The multipurpose nature also makes them handy for quick checks such as currency verification or marking cleaned areas in a playful way.

Usage note: the ink is invisible or colorless in normal light. To witness the glow, you must use a black light. This set does not include batteries; you’ll need to prepare three AAA batteries for each flashlight before use.

What makes Tegeme a good pick for events

• Party ready glow effects that enhance games, gifts, and celebrations
• Durable construction with a waterproof, impact resistant aluminum body
• Safe, washable ink with a robust plastic shell for comfortable handling
• Compact sizes that fit into party favor bags or pockets

• Perfect for birthdays, holidays, or classroom activities
• Appeals to kids and adults who enjoy mystery and exploration
• Simple setup with clear, accessible instructions
• Does not rely on visible ink, enhancing surprise and intrigue