Pioneer SPH-C10BT Single DIN Smartphone Multimedia Bluetooth USB Receiver Bundle Combo with 4x 6.5" 2-Way Coaxial 300W Max Power Car Speakers, 16 Gauge 50 Feet Speaker Wire - Walmart.com
Upgrade with Pioneer's SPH-10BT Smart Head Unit
Amazon.com: Pioneer SPH-10BT Next Generation Smartphone Receiver, 1-DIN, with Bluetooth, USB and Spotify, Connects to iPhone & Android : Electronics