I bought this earpiece to go with my Moto Rizr Z3, what a perfect match, slider phone, slider earpiece!  Besides looking great, it works perfectly, no complaints from people I'm talking with, most can't tell I'm on an earpiece.  I also love the fact that when you close the slider it powers off, I only charge it like once every 2-3 weeks!  I use it in my truck, at home & even sometimes at the office.  If you're looking for a headset that looks as good as it works go with the H800.