Instruct: Classify the given Amazon review as either positive or negative.
Query: Good for listening, bad for phone calls

I work from home and am on a ton of phone calls. Most headsets are small and wireless, which is great but they sacrifice sound quality and comfort (think 90 minute calls) for convenience. I thought these would give me great sound and comfort at the price of being bulky and corded, which is fine for me.The reality is they will work with my droid ... kind of. Sound is great most the time, but occasionally it's super faint. Most of the time the mic works almost too well as I had a co-worker point out I should mute while making tea because it was audible - something my two bluetooth headsets never picked up. But sometimes the mic just doesn't work, or I'm so faint no one can understand me. Also the sound only plays in my left ear. I suspect the converter is mono and there may be a workaround for this but I haven't investigated yet.Overall the headset works fine about 90% of the time, but that's just not good enough so back they go.