The stylus is OK, but the UV LED hardly usable

The stylus is OK, but the UV LED hardly usable

12 pieces secret pen with UV light, invisible writing readable by light (Toys)
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Customer Review

But a nice Encaustic for children's party, which also wars already. The pen will last approximately as long as the children need to go home (then the tank is empty). With the LED you have to direct to the magazine ran (and darken the room), so you can read something.
Overall, a nice gimmick - but more in any case.

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