Three days of audio monitoring on one battery charge. The Bluetooth range is better than any device of this type I have used. Noise cancelation is passive of course, with the earbuds snuggly in, most ambient noise will be drowned out. Ok for a lawnmower not well enough to hear music with my chainsaw running full throttle. I haven't heard them from the other end of a phone call. Some people say they sound great, some people complain. Maybe just that particular Bluetooth connection, who knows. Now on to the durability of this headset. Amazon should hire me as an electronic equipment torture tester. I'm a do it myself type, always a hammer or power tool in my hand. I can be found underneath a pickup or crawling through an attic. I've had my phone insurance cancelled more than once over too many cracked screens. Women and men reading this while wearing a blue collar will understand. If you work indoors it should take whatever you could throw at it. The damage in photo two was caused by a direct hit from a half ton pick up truck tire in my gravel driveway. "Heck these are trash" I told the wife when she handed them to me. What a shame, I really liked that set, thirty bucks out the window. But to my surprise they still worked other than the right earbud cable would not stay extended. I tied the cable in a knot to keep it from retracting, we'll get a few more miles out of them I figured. That was probably two months before writing this review. Then yesterday I was tromping out through the Texas bluebonnets. Paying more attention to the dogs when this set flipped off my neck and into the direct path of my boot. Well dang, that's the damage to the left hinge you see in the photo. But both channels and the transmit are still functioning 100%. So I'm writing this review after ordering another exact set from the very same seller. I'll probably get the duct tape out and fix this old pair up for the tool box. Bright orange duct tape in case they end up on a gravel road again, Lol!