Currently this app controls Dual's Head unit products via Bluetooth.This app controls most of the primary functions of your marine stereo features including: Mode change - Radio, USB, Bluetooth, iPod, Aux in Radio - FM1, FM2, FM3, AM1, AM2 and 7-channel Weather band. Seek/Tune frequencies, Access the preset stations, Store the radio stations etc. USB input - Playback the music from USB connected to the source unit. Search the songs in music list, ID3 display (Song Title, Artist, Album), Track Up / Down, Play / Pause Bluetooth - Music streaming, Play / Pause, Track Up / Down, ID3 tag display (Song Title, Artist, Album) iPod/iPhone/iPad control - Playback the music from iPod/iPhone/iPad connected to the source unit via USB port, Play / Pause, Track Up / Down, ID3 Tag Display Auxiliary input - Audio control 3 Zone speaker control (Zone 1, 2, 3) 7 Preset EQ curves (Pop, Rock, Jazz, Classical, Beat, Flat, User) 3 Band tone control (Bass/Mid/Treble) For some models, the Dual iPlug app operates just as a remote controller. *App capabilities vary with the stereo’s feature set.