Features 4 x 45 watts, Sirius-ready, line output terminals, ESP (Electronic Shock Protection), flip-down face, electronic volume control, wired remote ready, intro scan, cd changer control, rotary encoder multi-control, positive dispaly, volume attenuator. Installation size: 7-1/8" W x 2-1/8" H x 6-3/4" D. Overall size: 7-3/8" W x 2-1/4" H x 7-3/4" D.