The writing can only be seen using a black light (attached with the pen).;Couples, friends and detective minded people can use it for fun and purpose.;Stylish cool looking pen;On/Off switch;It is a pen that can write with invisible ink.

• INVISIBLE WRITING PEN UV LIGHT ULTRA VIOLET INK HIDDEN SECRET MESSAGE LED MARKER
• Pink

INVISIBLE WRITING PEN UV LIGHT ULTRA VIOLET INK HIDDEN SECRET MESSAGE LED MARKERBARGAINS-GALORE