The front of the box says:
Children may be awesome and scary to this direct but simple eight-feet reptile animal. After the fuel battery is activated by the salted water, the metal magnesium plate (3PCS) can successively provide the spider with 4-6 hours of power. Do to it is too real-like, the player may stop it during the time of playing. You can simply remove the fuel battery module and just clean it with running water, hang and dried it. All the material applied on this toy are environment-friendly, safe and clean. There is no any other toxic substance or waste. It won’t produce heat as well, which makes it absolutely safe for the children.
Unfortunately my picture of the side of the box was out of focus, so I can’t show you what it said. I’m sure it was hilarious.
As you might imagine, reviews are mixed.