This seems to be a good sturdy product, with solid and easy to hit buttons.
The sound quality is very good from micro SD card or via bluetooth from the phone.
All-in-all I'm pleased with my purchase.
A couple of minor niggles. It doesn't mute the audio from an MP3 player attached to the aux socket, so if a phone call comes in you have to scramble for the player's pause button. It does mute audio from SD/USB or bluetooth.
Also, although it will cope with folders on the micro SD card, it's very tricky to navigate to a new folder, especially if you are driving along. If you were going on a longer journey you'd be better setting up a long playlist beforehand.
I've tried it with a SDHC 8GB card which worked fine.
Also, just be aware that the screen shown in the first photo of the Amazon listing has been photo-shopped on. The real screen is a smaller rectangle, as shown in the fifth photo. It's adequate though and actually shows a lot of info. The song name also appears on the radio screen, if it has RDS.
The remote control is OK, and you can actually dial a phone number using the keypad, and it read out the numbers as you press them.