I'm still looking for the right solution for me, having recently moved to a state with a hands-free law. I don't think this will ultimately be the one for me, though. The speaker is good, even if it could have been a bit louder for me. I drive an SUV, and the sound level in the cockpit isn't as low as in most sedans.

There is no manual other than a quick-start guide, which isn't nearly clear enough in my opinion. It reminds me of a cross between Ikea instructions and the set-up brochure you get with most computer games. The detachable microphone is a great idea, but it was confusing for me personally. The guide just shows a picture of drawing of the microphone already several inches from the base and attached by a wire. It took me several minutes of searching the box to realize that no microphone was with all the cables they included. I then took several more minutes to realize that the microphone is attached to the base already by a retractable wire. You have to pull the mic (which is on the side of the base across from the power connections) and pull it to unwind the cable.

For me, the biggest drawback is partly my own fault, though. I'm rough on phones, so I bought the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/OtterBox-Defender-Case-iPhone-4-Blue-Black-Fits-AT-T-iPhone-4/dp/B003ZM35PC/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">OtterBox Defender Case iPhone 4 (Blue/Black, Fits AT&T iPhone 4)</a>. Unfortunately, that adds a good deal to the dimensions of my phone. The clip they use to adjust the fit for phones is a great idea, but it isn't quite expandable enough. to get my phone in, it's an extremely tight fit, and I have to drag it hard against the bottom layer of padding to do so. This foam padding isn't going to hold up to that kind of abuse for long, I'm afraid.

So, If you're tech savvy, have a phone smaller than the Otterbox Defender, and drive a quieter car than an SUV, this should be a great solution. For me, I'll keep looking.
I'm still looking for the right solution for me, having recently moved to a state with a hands-free law. I don't think this will ultimately be the one for me, though. The speaker is good, even if it could have been a bit louder for me. I drive an SUV, and the sound level in the cockpit isn't as low as in most sedans. There is no manual other than a quick-start guide, which isn't nearly clear enough in my opinion. It reminds me of a cross between Ikea instructions and the set-up brochure you get with most computer games. The detachable microphone is a great idea, but it was confusing for me personally. The guide just shows a picture of drawing of the microphone already several inches from the base and attached by a wire. It took me several minutes of searching the box to realize that no microphone was with all the cables they included. I then took several more minutes to realize that the microphone is attached to the base already by a retractable wire. You have to pull the mic (which is on the side of the base across from the power connections) and pull it to unwind the cable. For me, the biggest drawback is partly my own fault, though. I'm rough on phones, so I bought the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/OtterBox-Defender-Case-iPhone-4-Blue-Black-Fits-AT-T-iPhone-4/dp/B003ZM35PC/ref=cm_cr_arp_d_rvw_txt? ie=UTF8">OtterBox Defender Case iPhone 4 (Blue/Black, Fits AT&T iPhone 4)</a>. Unfortunately, that adds a good deal to the dimensions of my phone. The clip they use to adjust the fit for phones is a great idea, but it isn't quite expandable enough. to get my phone in, it's an extremely tight fit, and I have to drag it hard against the bottom layer of padding to do so. This foam padding isn't going to hold up to that kind of abuse for long, I'm afraid. So, If you're tech savvy, have a phone smaller than the Otterbox Defender, and drive a quieter car than an SUV, this should be a great solution. For me, I'll keep looking.