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 surface 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 Size: about 13.5x1x1cm/5.31x0.39x0.39 inches Include 1X invisible ink pen Tips: 1. Due to the different display and lighting effects, the actual color may be slightly different from the picture color. 2. Due to manual measurement, allow a difference of 1-5cm, thank you! 3.Comes with button batteries, the batteries have protective inserts, pull out before use. ♥ Quality Performance : Our pen ensuring smooth gliding across paper without smudging. perfect for students and educators who demand neatness in their notes and illustrations. ♥Versatile for Every Need : Catering to a kind of writing and drawing styles, along with a flexible brush tip – ideal for everything from intricate diagrams to headlines, adult coloring books, and artistic sketches ♥ Comfort Use : Ergonomically designed with comfort in mind, our pens feature a balanced grip that minimizes fatigue during extended study sessions ♥Wide Application : Suitable for all your school and office needs, these pens excel in various applications, including note ,journaling, graphic designing, and more. ♥GOOD SERVICE: Our store promises free returns within thirty days of arrival,if you have any questions you can contact us at any time,we guarantee a timely response within 24 to solve the problem for you in real time!