Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Silenced by my headset

I have had Etymotic earphones for years and love them, so it was with great confidence that I ordered this headset. Unfortunately, I quickly discovered three problems:1. The headset has a 2.5mm jack that does not work with my mobile phone, which has a 3.5mm socket. $10 more and 1-2 weeks longer to get an adaptor.2. The ear plug supports the relatively small weight of the boom/mic and cord. It feels fine at first, but gets uncomfortable after a while. I discovered this while waiting for my first call with the headset on.3. The mic is noise cancelling and must be close to your mouth in order to work properly. The boom is too short for me and as a result the noise cancellation cancels out my own voice! By pulling on the boom I got it close enough to my mouth to verify that it actually works, but that is hands-on and uncomfortable and will not work for general use.Sigh. I am returning the headset.