Instruct: Classify Amazon reviews into positive or negative sentiment
Query: good product, excellent battery life

So far I've found the battery life to be excellent. It's pretty comfortable to wear because it comes with different size ear pads. Most people I talk to can't tell I'm on a headset - even outside. Range is good for about 20 feet - beyond that, the sound gets choppy. The on/off/mute switch is tricky - you can't feel any click - you have to watch the LED. Volume is fine, sound is clear. Just make sure push the ear pad a little into your ear canal.