Shark Motorcycle Audio 250w Motorcycle Atv 2 Speakers + Radio W/2 Remotes (Wired / Wireless) Sd Aux Huge Lcd Display + External Antenna Black - Msdhrs6160h USB & SD slot input 3.5 mm & aux input for any mp3 player or audio device (even CD's Jack for external antenna (internal also included) marine weatherproof antenna is included Working Voltage 10-16V DC MAX power @ 4 100WX2 +50w RMS power @ 4 50WX2+65w THD 75dB 2 stereo Channels +1 Subwoofer channel Channel separation &gt;45dB Frequency response 20Hz-50kHz Sensitivity 50mv Frequency range 87.5--108MHz Huge LCD LIGHTS UP FM frequency & SONG INFO display Wireless and wired full function remote control that changes channels Power and MUTE switches Usable sensitivity 5 v at S/N 26dB Fuse rating 5A Details for loudspeaker Working Voltage 10-16V DC VoiceCoil Impedance: 4 Resonc Frequency: 165HZ Effective Frequency Range: Fo-12kHZ Puiput Sound Pressure Level: 88dB Rated Input Power: 75W Max Input Power: 100W Distortion: &lt;= 5% Fuse size 5 20MM 10A