This USB SD AUX MP3 Adapter + Bluetooth hands-free system - combining Yatour, is a good alternative in addition to the initial purchase of another radio. Have VOLVO V40 and wanted to get into the digital pleasure to listen to music without having to install the same a new radio. There are some things that everyone should know. Only certain USB flash drives work, no USB Flash Drive sticks that do not like that part. In the SD card, it is important to enter the folder with the descriptive markings and title numbers, otherwise do not run. Newer songs in WMA format can be read only partially, shame is so some songs are skipped. The Bluetooth Kit works well on older mobile phones (Nokia N9), but the Micro must be very close to the driver. SunVisor linkage has in me a very good reception and the cables are quickly stowed behind the A pillar trim. All in all, the radio with good sound is now even better with the sound quality no wonder.