Relaxdays Set of 12 Marker Pens with UV Light

Little detectives love to search for secret messages and solve tricky cases. Perhaps one of the wrongdoers used one of these secret pens to jot down their plan somewhere. In daylight, the invisible writing is not visible, but when your little treasure presses the button to activate the UV light on the cap, they can read the secret notes clearly. The UV pens come in four vibrant colors and make great party favors for the next children's birthday. They are powered by three AG3 button cells, which are already securely integrated into the pens. The light sources cannot be replaced.