Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Doesn't last.

I bought these headphones in March. It is now late May and the right earbud doesn't work. Even before that happened, I attempted to use it at the gym and while running outside, and it doesn't stay tight and secure on the ear. Sweat and moderate movement cause it to slip out of place. The "claw" as someone else referred to it is thus ineffective. In conclusion: waste of time and money.