Dri Mark CFD5PK 偽造紙幣検出器マーカーペン、米国製、3倍インク、ポケットサイズ、偽造マネーチェッカー-米国通貨の損失防止テスター&詐欺防止(5本パック)

The product works. We've used it in our workplace and found fake bills. Love this and woild buy again.

Hasn’t failed me yet, very simple to use.

Works as advertised

Works just as described.

Pens work as expected, but are a bit on the shorter side compared to what I'm used too. I also noticed that the pen cap doesn't have the tab thing that attachs it to your paper so there is no great way to tie it to the register so it doesn't get lost without a big glob of tape on it. I do like the fact that it comes with multiples pens for when they do get lost though! As far as I know, the pen is pretty accurate. The color eventually blends in with the money. You wouldn't want to use these pens for anything but checking to see if money is fake or not.