Shark Shkr3080b-k 250w Motorcycle Snowmobile Audio System W ' 3" Speakers Black Working Voltage 10-16V DC MAX power @ 4 50WX2 +150w RMS power @ 4 25WX2+65w THD 75dB Channel separation &gt;45dB Frequency response 20Hz-50kHz Sensitivity 50mv Frequency range 87.5--108MHz Dot Matrix LCD FM frequency display Usable sensitivity 5 v at S/N 26dB Fuse rating 5A full motorcycle marine system, fm tuner, aux input