Tegeme 4 Invisible Ink Pen Set 2 Invisible Marker 2 Blacklight Flashlights with UV Black Light Markers Disappearing Ink Pen for Secret Notes Holiday Gifts Favors(51 LED)

Package Contains: you will receive 2 UV flashlight(batteries not included) and 2 invisible ink markers; Customers can write their secret messages on paper that will only be revealed under UV light; Whether it's for spy games, family gatherings, these mysterious tools will inspire imaginations

Safe and Reliable: our black light flashlight is made of aluminum alloy,; The disappearing ink pen uses safe ink, allowing customers to doodle on their skin or clothes as they like, which can be washed off easily and happily

Portable Design: the invisible ink pen measures 5.75 x 0.43 inch, making it easy to fit in a backpack, while the uv light flashlight is 5.7 inch long and comfortable to hold; Customers can create, doodle, and record secret thoughts, which adds endless fun to activities such as escape rooms, treasure hunts, riddles, and detective games

Multipurpose Use: this blacklight pen can be applied to draw on a variety of surfaces such as clothing, paper, walls, skin, etc. It can also be applied as a gift bag filler and reward; The uv flashlights can detect animal urine, pet stains and food stains, and can also be applied to verify the authenticity of currency

Usage Instructions: our invisible ink pens are invisible and colorless under normal light; To discover their magical brilliance, you need to use them in a dark light environment; Please note: this product does not include batteries, you need to prepare 3 AAA batteries yourself