Purchase through Amazon 4 months ago. Works great with my Razr phone. I'm a truck driver and have had problems in the past with hearing other party and with other party hearing background noise. I can hear very well with this bluetooth. The person I'm talking to can't tell I'm on a bluetooth about 90% of the time. I found that alot of the sound quality towards who I am speaking with has a lot to do with what they are talking on. I can't talk with Verizon customer service with this on. Calls are crystal clear while speaking with another person with a handsfree unit on. Speaking with someone on a landline is pretty good clarity for them, they can tell if my window is open or not and if boom is too far from cheek they can hear alot of background noise. No matter who I talk to I can hear great every time.