The MA400 App Ready Marine Audio Source Unit from ASA Electronics provides state-of-the-art marine entertainment options. The 200-watt stereo features a range of audio options, including an AM/FM electronic tuner, full iPod and iPhone controls, and a USB input for playing music off thumb drives. Additionally, boaters can access weather information with the stereo’s NOAA Weatherband. The unit emits an alert when the stereo is at low battery and provides a visible warning on the display. Both the module and commander are waterproof.