Instruct: Classify Amazon reviews into positive or negative sentiment
Query: It kinda works

Don't expect to wear the S9 headphones while working out. Sweat gets into the earpieces and shorts out the controls. The headset worked for me for a couple weeks before it started breaking down. After about a month, it completely stopped working.Second, the audio quality was never very good.The battery only ever lasted about 6 hours, which would be fine if I could carry an extra battery. As it is, the batter is built-in.