This pen, adorned with images of dinosaurs, makes use of ink that can only be seen with UV light. Write a secret message, then shine the light in the pen lid on it to reveal it! • Light in the pen lid uses 3 × LR44 batteries, which are included Packaging: • Card box with Euro hook slot for retail display Safety information: • Not for children under the age of 3 years. • Button batteries can be easily swallowed and cause serious harm. Keep them away from children. • This toy contains batteries that are non-replaceable.