Description:Flip a switch and launch your very own nuclear attack with the Useless Box! Well， actually， turn the Useless Box on andthis clever electromechanical box turns itself off. That's right， experience endless， useless fun with the fully assembled Useless Box. It is also known as the Useless Machine. Every time you flip the switch on the Useless Box， a little finger pops out and turns itself off. Sure it's useless... but it keeps your itchy switch-flipping fingers busy! Please note it is not a finished product， you must DIY By yourself when you receive it. Color：As shown in the picture.Material: Acrylic.Dimensions: 14cm x 8cm x 6cm.Battery: 2 AA batteries (not included) About the packing: there is layer of protective film outside， need to tear apart， the inside is black， please don't get me wrong