Instruct: Classify the given Amazon review as either positive or negative.
Query: Flimsy piece of techno-junk

The kids had fun with it when it worked.... which wasn't often.It took us an hour to figure out how to open the battery compartment. (The screws are buried under an inch of foam.) Then, when it was being used, the ball would intermittently stop working because the batteries lost contact. (The pieces of metal they are supposed to touch are small and flimsy, and the ball gets jolted during regular play.)Nice idea, but we can't recommend it!