I purchased one of these because it was on sale and it sounded like a great design.It is a great design. The push button with automatic end slide out is great. Being able to shut it completely off so the battery lasts forever is great. The fit is solid and it holds well. The pair up with the phone is fast enough to catch the ring before it goes to voice mail. Like I said, the design is great.The hardware is not so good. It stopped working 2 months after I bought it. No warning, just won't pair up anymore, on 4 different phones. It happened while it was sitting on my desk, just stopped. One day working, one day not.Great idea, poor implementation.