I was impressed by the crisp sound and bass resonance of this single earpiece. I use it at work for phone calls, meetings and listening to voice recordings, and it delivers extremely good sound while filtering out room noise. I had been using a large earmuff-type headset, but I'll never go back to that. This earpiece is so lightweight and comfortable to wear that I forget I have it on. I like that you can charge the headset itself AND the case, which gives you lots of working time. In an entire week I charged both only once. It fits the ear well and the over-ear hook is easily adjustable. It comes with various ear tips so you can adjust the fit further. Pairing is effortless--and the voice that says "connected" and "disconnected" is an adequate volume but doesn't make you jump out of your chair. Helpful in an office! A great earpiece with practical features.