The Pyle PLR44MU is an In-Dash AM/FM-MPX Detachable Face Receiver with MP3 Playback & USB/SD/Aux Inputs. Play music from four different sources. The AM/FM radio uses MPX PLL tuning, can seek/scan and stores up to 30 presets (18 FM, 12 AM). You can plug in a USB stick or SD card loaded with MP3 or WMA files to listen to your favorite digital music - plus, the track info is displayed on the LCD screen. Or, use the conveniently located 3.5mm (1/8") aux-in port to plug in virtually any audio playing device, including iPod, iPhone and Zune. With 60 watts each on four channels, this head unit isn't lacking for power. Get the sound how you want using the bass, treble, balance and fader controls. The front panel is also detachable for security.