["brand new and high quality.\r\nFeatures:\r\nThis fine point marker, is loaded with special ink that is only visible under UV light.\r\nIt includes a mini LED UV black light with batteries, so you can view your messages.\r\nThe invisible ink pens are very popular around people, which can creat a lot of fun. People can use it to communicate secrectly and hide messages. \r\nChildren think that they are secret agents with these pens, lay mystery adventures and writing clues for each other. \r\nYou can make secret for spy messages with your friends. \r\nThe pens also can be used widely. \r\nPerfect for themake a fun party favor, for drawing, secret message writing, currency checking, security marking.\r\nIt is a great gift for your lover, family and friend.\r\n\r\nSpecifications:\r\nType: Ink Pen\r\nPowered by: Button cell battery (included)\r\nMaterial: Plastic\r\nColor: Random delivery (If you buy more than one,the color you received may be the same or different colors)\r\nPen Length: app.13cm/5.12in\r\nQuantity: 1 Pc\r\nNote: \r\n1.Transition: 1cm=10mm=0.39inch\r\n2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\n3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes: \r\n1 x Invisible Pen (without retail package)"]