This Package Includes the Following Items:1 x Kicker 46CXA3604 Car Audio 4 Channel Amp 720W Peak Speaker Amplifier CXA360.41 x Harmony Audio HA-AK10 Car Stereo Complete 10 Gauge 600W Amp Amplifier Install Kit - Nickel1 x Harmony Audio HA-R4 Car 4" 150W Speakers1 x Harmony Audio HA-R35 Car 3.5" 90W Speakers1 x Harmony Audio HA-R69 Car 6x9" 450W SpeakersKicker 46CXA3604 Car Audio 4 Channel Amp 720W Peak Speaker Amplifier CXA360.4:SpecificationsPower Handling:90 Watts x 4 @ 2 Ohm Stereo RMS180 Watts x 4 @ 2 Ohm Stereo PEAK180 Watts x 2 @ 4 Ohm Bridged RMS360 Watts x 2 @ 4 Ohm Bridged PEAKFreq Response: 10Hz - 20kHzHarmony Audio HA-R4 Car 4" 150W Speakers:Specifications:4" Rhythm Series 2-Way Car Speaker PairPeak: 150 wattsRMS: 50 wattsSensitivity: 88dBFreq Response: 60Hz-20kHzTweeter Size: 1/2"Single 4 Ohm Harmony Audio HA-R35 Car 3.5" 90W Speakers:Specifications:3-1/2" Rhythm Series 2-Way Car Speaker PairPeak: 90 wattsRMS: 30 wattsSensitivity: 88dBFreq Response: 85Hz-20kHzMounting Depth: 1 5/8"Mounting Cutout Diameter: 3 1/16"Tweeter Size: 1/2"Single 4 Ohm Harmony Audio HA-R69 Car 6x9" 450W Speakers:Specifications:6x9" Rhythm Series 3-Way Car Speaker PairPeak: 450 wattsRMS: 150 wattsSensitivity: 92dBFreq Response: 30Hz-20kHzTweeter Size: 1/2" & 1"Single 4 Ohm