Invisible Ink Pen with Light -Luminous Light Invisible Ink Pen Drawing Learning Pen 8ml Describe: This product uses a high-brightness LED currency detector lamp with an invisible pen core. It has the function of checking money and invisibility. It is the choice of electronic gifts for advertising and promotion. This pen is a newly product. The characters written by this pen are generally invisible. through the light at the end of the pen can they be clearly seen. It is suitable for writing confidential characters, invisible tattoos, etc. It has a wide range of uses. The pen also has the function of checking money, and it is easy to carry. It is a great entertainment and gifting! Welcome new and old customers to us by phone or letter. This pen is a two-in-one applicable product, which can write, and can also distinguish the authenticity of currency, etc. through the light at the end of the pen. Special note: This pen can also be a white lamp ballpoint pen. When your customer requires the refill to be blue, we can change the lamp to white, which is to produce according to customer needs, as far as possible to meet customer requirements. This lamp can write, but also be used as a night light. It is very affordable. You are welcome to buy it. use: (1) The currency detector is illuminated with a purple light on the end of the pen, and the watermark will appear immediately, which can accidental loss of your property anytime and anywhere. (2) It can be used as a writing tool between lovers and. Perhaps the it brings to you can help you easily track down your long-awaited MM! (3) It is used in places where it is convenient to write directly, such as: the key points in the contract, the establishment of running accounts, and the renminbi calculation. (4) Sign your bill or make a mark on your baby's things, which will damage the beauty, anti-counterfeiting and anti-loss. (5) You can directly make styling on your face or body, making you the focus of everyone in the dance PArty or PUB. (6) At night, it can be used as a miniature flashlight to illuminate you want to illuminate. SIZE:13.5*1.3CM Contains: 4X pens