One of the DEH-P640's key features is easy to spot: its bright Organic EL display is easy to read, even in sunlight or at off-angles, and it's the business end of a flap face, which swivels up when you load a CD and detaches when you leave your vehicle. Pioneer's MOSFET50 power supply ensures 50 Watts (x 4) of pure, powerful audio, and the Sound Focus EQ (SFEQ) feature gives you independent bass/treble control for front and rear. The DEH-P640 offers cellular/ mute capability (with our CD-CM1), and the slim remote makes operation easy. This unit can also control a CD changer and a TV tuner. Premier's two-year warranty applies.