A magical felt tip pen that uses invisible ink which 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). 

Suitable for ages: 3+ years

Please note, this product contains button batteries (within the pen that are unremovable and can not be replaced). Button batteries are unsafe if swallowed. For information about button battery safety, please click here.