• Ink Type : inclusive Ink / Watermark Ink (when focus light then see writing)
• 3in1, invisible ink, Money checker and Emergency Light
• Color :Pink, Green, Orange, Blue
• Pack Type :Packet
• Material :Plastic
• This 5" fine point marker, is loaded with special ink that is only visible under UV light.
• It includes a mini LED UV black light with batteries, so you can view your messages.
• Kids love them for writing secret messages & notes to each other, students can highlight text books and still sell the book when they finish their coursework.
• You can mark your personal property with your house number and zip code in case of theft.
• Can write secret message
• These colors are fluorescent
• Light your message with the UV light
• Includes a mini LED UV black light
• Useful secret agent for his spy mission.