This set includes a Hi-Def NES upgraded front loader console, one OEM controller, HDMI cable and power supply.
This is still an original Nintendo so there are almost no compatibility issues with any games or accessories. The zapper will not work on digital TVs, but you can still hook it up to a crt via composite output and play zapper games.
Description of the Hi-Def NES and how to use menu options can be found here.
If you would like to purchase the kit only and install it in your NES console you can find them here.