Feature:
100% New and High Quality
Invisible ink pen, keep your own sceret
Use the special light of the pen to read what you write
Kids love using this kind of pen to keep their secret and play games
Invisible ink pen also can be used as currency checker, glow charger and hidden highlighter
Be powed by three AG10 battery, which are included
pen's size: appro 13cm length

Package include:
1x invisible ink pen
4x button cell battery