Engaging Design: Discover the thrill of invisible ink with pens that remain unseen in regular light, yet reveal vibrant messages under UV light. Write confidential messages or mark your precious belongings with a touch of mystery.The Daemson invisible ink marker is the perfect tool for creating invisible messages or signing important documents.

Intriguing Writing Tool: Unleash your creativity by using these light-enhanced secret pens to craft hidden messages on paper, fabric, skin, and more. Write your message, wait a moment, then shine the pen's UV black light to reveal amusing and captivating words.

Currency Detection: The compact LED keychain UV black flashlight also serves as a currency detector, revealing hidden strips on different currencies, including major ones like USD, RMB, EUR, CAD, INR, GBP, and others.

Versatile Uses: These invisible ink pens with UV light are the perfect choice for birthdays, parties, Christmas, Halloween, and other holidays. Elevate the excitement of riddles, treasure hunts, and themed parties, captivating individuals of all ages with these engaging and memorable gifts.

Package Contains: The package includes 6 invisible ink pens, each measuring approximately 14 x 1.5 cm (5.5 x 0.6 inches) and featuring blue, pink, and yellow ink. Additionally, it comes with 6 compact UV LED keychain lights (approximately 4 x 2.3 x 0.5 cm) for various uses.