Jensen MS30 AM/FM/USB Compact Waterproof Stereo, 160 Watts (40W x4), USB Input for MP3 Enable Devices, Rear AUX Input (RCA), Line-out Audio (RCA), Simple User Interface Key Features - 160 watts (40W x 4) - AM/FM tuner - USB input for MP3 enable devices - Rear AUX input (RCA) - Line-out audio (RCA) - Compact, self-contained design - Simple user interface - Daylight-readable segmented LCD display and LED backlit buttons - Electronic audio settings (Bass/Treble/Balance/Fader) - Conformal coated circuit boards - UV-resistant finishes/materials (ASTM D4329) - Corrosion-resistant materials (ASTM B117) - Waterproof (IPX6) - FCC/CE certified Specifications - FM Sensitivity: 1 uV - AM Sensitivity: 20 uV - Output Power: RMS 15W x4 / Maximum 40W x4 - Total Harmonic Distortion @ 1 Watt: 1% - Power System: 12 VDC - Operating Voltage Range: 9 V to 18 V - Current Draw @ 12V: Idle 0 mA / Nominal 0.8A / Maximum 7.8A - Water Resistance Rating: IPX6 - Operating Temperature Range: -4°F to 149°F / -20°C to 65°C - Storage Temperature Range -22°F to 158°F / -30°C to 70°C - Maximum Relative Humidity: 100% - Overall Dimensions: 3" Dia. x 3.35" Depth - Product Weight (unpackaged): ¾ lb.