Monitor/TV/DVR unit ???

[geoleo]

I have a 34 trawler. It has good Garmin color plotters/radar units on both salon and flybridge. Both are identical and have a monitor outlet. I currently have a 120V 15" Viewsonic monitor which I use in the salon connected to the Garmin. I want to move the 15"Viewsonic to the Flybridge and buy another Combo Monitor/TV for the salon. Be nice to also get one that also plays DVR s. Boat has one of those round Shakespeare TV Antennas . No computer for streaming and no smartphones. Need suggestions for what unit /system to get. Be nice to get a 12 volt one but boat has a great Inverter for AC. Thanks.