Here's an overview of the Aputure V-Converter Extra Scope product that takes an HDMI input and outputs a variety of overlays to any HDMI monitor, display, or television.
When the Aputure V-Converter product was first announced, the specs listed it would take a 1080p input, but only output a 720p signal. A recent firmware upgrade now allows the unit to output to full 1080p. I'm sure all the new products shipped will have this update, but if you need to download it, check the Aputure website (here).
The V-Converter can be powered from a Built-in lithium battery, but it's not a product I think fits the run-gun type shooter. With a $340+ price tag, mobile shooters may want to just look into a portable LCD monitor with these features already built in.
Aputure V-Converter HDMI Extra Scope Pro Overlays
In my opinion, the V-Converter is a product that will mainly appeal to those who will be working on set, in a studio type environment, or on location that requires a large stationary monitor. It will be helpful in any setting in which you need to look across the room, check exposure, see if audio levels are peaking, and what's currently in focus. It may be a product that compliments video shooters who have a workflow streaming Wireless HDMI Video (like with these Radian Pro Kits).
Considering how cheap large LCD HD televisions are these days, this little product can add-on big features normally only found on very very expensive studio monitors. You can find more info about the Aputure V-Converter HDMI Extra Scope (here).
Aputure V-Converter HDMI Extra Scope Pro Overlays