Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I wanted to like them

I was very excited to get bluetooth headphones, so I wouldn't have to constantly plug and unplug things into my laptop. However, you can't use the built-in bluetooth -- you have to use the Logitech adapter, plugged into the headphone jack. Then you must turn it and the headphones on at the same time and sync them. Not as simple as my wireless keyboard and mouse!Even worse, the headphones are not adjustable. They are rather heavy for headphones, and they squeeze my head so tightly that I get a headache after just 15 minutes. I can't believe there's no way to accomodate different size heads!So, my search for the ultimate headphones continues.