4.3" capacitive touch glass LCD colour display. AM/FM/ Bluetooth / Wi-Fi audio streaming / PartyBus / digital optical input / USB audio / AUX x2 / UPnP / MTP / DAB+ ready. PartyBus Technology (receive and broadcast - wired or wirelessly). Bluetooth audio streaming music control (via devices compatible with A2DP/AVRCP 1.3 Bluetooth protocols). Wi-Fi ANT Technology & NMEA 2000 (Control via MFD - Fusion-Link). Water Resistance - IPx7 from the front panel when installed correctly. . Digital Signal Processing (DSP). Internal Class-D Amplifier / Peak Power : 28W max. Ports : 2 x RCA Inputs (AUX1 AUX2) SPDIF Optical Audio-In Ethernet One USB 2. port (for phone charging / media playback). Over-the-air software updates via the free Fusion-Link app or USB. World?s First Marine Wi-Fi Stereo:High quality audio streaming is now available via Wi-Fi delivering a higher data transfer rate in comparison with Bluetooth. Enjoy perfectly synced music throughout your vessel by wirelessly connecting multiple Apollo stereos via PartyBus. Digital Signal Processing (DSP):A technically superior listening experience made simple Fusion DSP produces superior sound quality in every environment. Precisely calculated loudness curves optimized for the human ear ensure quality full range audio at every volume level while the feed-forward limiter anticipates a peak in the audio and adjusts the gain to make distortion at any volume level a thing of the past. Using environmental information and customized Fusion speaker profiles you can now achieve customized optimized audio for any area of your boat resulting in an entertainment system that is perfectly tuned for premium audio reproduction and programmed to protect your system season after season. Setting up your DSP profiles is made simple with the free Fusion-Link app or with a custom-made Fusion-Link PC app for OEM boat builders. With just a few clicks you can set up the preconfigured DSP profile once and get back to enjoying what you love on the water while listening to high quality audio customized for your ears and the environment. PartyBus:Enjoy the freedom of musical choice with the Apollo Series and Fusion-PartyBus?. With Party Mode Personal Mode and finally the ability to switch between the two without disrupting the audio in other areas of the vessel PartyBus is Fusion?s audio distribution network of the future. Glass Touchscreen Display:The future of marine audio entertainment has arrived in the Apollo RA770 with its 4.3? LCD colour touchscreen display. Simply tap the screen to pause and play or swipe through your playlist to your favorite song ? fiddling around to locate the right button is now a thing of the past. Over-The-Air Software Updates:The Apollo Series is intelligently simple and always up to date thanks to the over-the-air software updates available from your smartphone or compatible device via the free Fusion-Link app. More Source Options Than Ever Before:The Apollo RA770 features more source options than ever before with Bluetooth UPnP Optical Audio advanced SiriusXM features and DAB+ radio available AM/FM radio AUX and USB connections ready at your fingertips. True-Marine? Designed and Engineered:Built on Fusion?s True-Marine design philosophy the Apollo RA770 has an impressive IPX7 rated water resistant front panel and has been tested to a high level for protection against salt fog temperature vibration and UV protection.