Magic Pen Invisible Ink by Djeco Staionary Art and Crafts for Kids 3yrs+

A magical felt tip pen that uses invisible ink that appears in the beam of the UV torch hidden in the lid. The design features an on/off button and functions with 3 LR44 HD batteries (included).  Children will love writing secret messages to each other or using them to write in their personal journals.  Please note this product contains button batteries (wIthin the pen that are unremovable and can not be replaced). Button batteries are unsafe if swallowed. Suitable for ages: 3+ years