hengsof Multifunction Luminous Light Invisible Ink Pen Big Money Detector LED Light Pen Toy Pen 1ml

Multifunction Luminous Light Invisible Ink Pen Big Money Detector LED Light Pen Toy Pen Describe invisible light pen, the ink is invisible ink, writing can be seen, you need to light to see. Built-in light, children will write a lot of messages to each other, invisible to the naked eye, light will appear on the text Note: You can write on most surfaces, but whether you can stay on the depends on what you write. If you write on paper, it can be kept forever; if you write on metal or plastic It may last long because it can be easily erased due to the properties of metal and plastic. Pecification Color: Red, yellow, green, blue, purple, black, Weight: about 10g Material: plastic