Estou desiludido, a caneta não tem escrita invisível exposta através da luz UV, ou seja, o produto que pretendia. Em alternativa a isso a caneta possui 1 esferográfica normal de cor preta, 1 "ponta em plástico" talvez para uso no tablet (estas duas pontas são trocadas manualmente, sendo necessário desmontar a caneta consoante a ponta pretendida), 1 luz UV de fraca potência, 1 lanterna flexível possibilitando iluminar enquanto escreve e 1 luz laser.
The product have arrived in time, but the quality is very poor. The UV is not even working. There was also problem with the laser at first, probably because some drops during the shipping or it was bad made - the laser pointer was very weak or was not working at all. But i somehow tried to fix the pen and it worked eventually.
But the customer service is amazing. They contacted me the next day after my review and I got full refund. So I recommend to buy here. You win either way - even if the product is bad, the customer service will fix it.