This tablet runs Android 4.2.2 Jelly Bean on a 1GHz quad-core Allwinner A43 CPU with 1GB RAM, 8GB internal storage, and a microSD card slot. It has 2 cameras, including the expected VGA front-facing camera and a 2MP rear camera of unknown quality.
It has Wifi (with Miracast wireless display support) but there's no mention of Bluetooth. With a 2.8Ah battery, HP expects that it will run 5 and a half hours before needing to be recharged. Given my experience with the HP Mesquite (the $99 Android tablet HP released last November), that runtime is probably a low estimate (turn off the backlight and Wifi and the tablet will run longer).
All in all, the HP 7 Plus is not a bad tablet for the price but it's also not a great tablet. It has an unimpressive 7" screen with a resolution of 1024 x 600, and it is also running an old version of Android on meh CPU.
But that is pretty much what you should expect for a $99 Android tablet. The only $99 tablet that breaks the pattern is the old Kobo Arc, which can be found on the Kobo website. If you can live with Kobo bugging you with suggestions about buying ebooks, it's a decent tablet.