Description:
Send invisible messages and make them visible again when you illuminate them with ultraviolet light
These pens are equipped with UV lights, so you don't need to buy spare lights. There is also a battery inside, which is very convenient to use.
Specifications:
Material: Plastic
Size: Approximately 14.6cm long
Color: Random color
Power supply method: 3 button batteries (included)
Quantity: 1/2pcs