The earbud microphone has very low sensitivity and must be held right up to your mouth in order to be heard. The power cord does not seem to fit my car jack perfectly so tends to slip when hitting bumps, etc. Otherwise, it works fine. The phone jacket fits but the opening at the bottom for the power cord plug does not line up so I had to cut it out. There's nothing here that's really great, but all are useful and for this price, well worth it.