This is my first bluetooth device, so I guess I was hoping for miracles.It does fit and stay in my ear pretty well, now that I've read the directions about how to position the little loop. I'm told I'm a little hollow/echo-ey/staticky sometimes from the car (I get a lot of road-noise), but it's better than speaker-phone; if it's a really critical conversation, I just turn it off and hold the phone to my ear. It's fine in the house.It does occasionally pick up loud/sudden background noise (e.g. ambulance siren, or dog barking next door), but for the most part it does pretty well focusing on just my voice.Range is decent. It's usable 5-10 feet from the phone in the house (great for when I'm doing dishes or laundry), but in the car it seems to make an improvement in voice-quality on the other end if I take the phone out of the cupholder and tuck it into my shirt pocket.I've only had it a month, so the brand-new battery works great so far. I'm on the phone less than an hour a day, so I only have to charge the earpiece once a week, and it charges within an hour or two.The little charger case is kind of a pain; I've misplaced it once already (it had rolled off the passenger seat, and it's so little and black that I had to really look to find it down there), and am now leaving the case with the charging-cord, and carrying the earpiece loose in my purse. Wish they made phone holsters with a little compartment for the earpiece!All in all, operation is relatively simple, price was right, and I LOVE that it's so cute and tiny, and wireless, and RED!