OFF-ROAD & Marine Multimedia Source Unit - 160 Watt AM/FM/Bluetooth, USB, Mobile Entertainment Controller. Bluetooth Connect & Quick-Pair - Quick and secure pairing of devices with your music library with album art displayed. USB Control - Easily connect smartphones, portable media devices and streaming services. iPod control allows full Apple connectivity. Dual Audio Zone Capability - Control volume in two different areas independently, such as passenger area and tower speakers. 120W Max Each, 60W RMS Each (pair of speaker) 75' Titanium Dome Tweeter Composite Polypropylene Cone 4 Ohms Impedance Sensitivity: 87.7 dB Mounting Depth: 3.7'