Instruct: Classify the given review as either positive or negative.
Query: Doesn't work in stereo mode.

Bought this for my cell phone so I can have hands free and stereo mp3 access. The first one didn't work in stereo just mono. The company promptly sent me another one ( didn't want he broke one back). Got #2 and the same thing was wrong. I tried it in 3 different cell phones and even 2 different 2.5mm house phones with no luck. You get what you pay for but you should get what is advertised ( Stereo ). Company was top notch though.