Features: 1) Invisible ink pen with UV light2) Can write invisible messages or designs on any dry surface3) Images can magically appear when writing4) Built-in flip-top UV light5) People can put down their bright ideas or top secret messages in a super cool wayOuter packing: 300pcs/ctnCarton dimensions: 66 x 35 x 25cm N.W.: 11kgG.W.: 12kg producing area:China payment:T/T, L/C supplying capacity:600,000pcs/month