First things first, you get what you pay for. So if you’re looking for a high quality sound system with all the fancy customizations, $15 just won’t cut it. I bought the FM only aux option of this product and am very satisfied with my purchase so far. Instillation was quick and easy. All you need is basic know-how about wiring and a few simple tools and you’re set. (The guys at O’rileys helped me find what I needed). All you need is some pliers and a small box of wire clamps and if you’re not picky about the kind you get, a small box runs for a few bucks.I installed this stereo system into my 1996 VW golf because I wanted the AUX option. Sound wise, this stereo does exactly what I need. I haven’t used the SD card yet but I won’t need to since all my music I play from my iPhone. I use the aux port on the front to play music and it does just fine. The stereo has buttons for preset radio stations, tuning, a mute button, a mode button to switch between radio, sd, aux, and usb. You can adjust base, treble, fading, and it offers a few preset options for maximizing music quality (rock, pop, loud, etc…)My only complaint is that you cannot adjust the brightness for the backlight. It’s not overpoweringly bright, but having a few brightness level options would be nice. You can still turn it off entirely which serves me perfectly.Some people noted that the volume automatically resets itself to 25 when you turn the car off. I have not had this problem with mine. I think the problem with that has to do with either loose or incorrect wiring.Overall, for $15 bucks plus some wire clamps, I feel like I got a deal. Should I purchase another junk vehicle in the future, I’ll definitely install this stereo into it. Should anything change about product satisfaction, I’ll post edits.