Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't work as advertised.

In the description it says it can reach a distance of 200 ft. in the open field. I find this hard to believe especially since the instruction papers shipped with the item only claim it can cover 30 ft. That might even be an overstatement though. The only way I see this thing working is if you plug it into an ipod and set that ipod directly onto whatever receiver you're hoping to capture the signal from.