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 (2 pair of speaker) 75' Titanium Dome Tweeter Composite Polypropylene Cone 4 Ohms Impedance Sensitivity: 87.7 dB Mounting Depth: 3.7'