I've got the 8 quart version. It's a bit of a combination of crock pot, pressure cooker, and induction cooker. There are options to saute food, prior to adding all the other ingredients to pressure cook. The saute/induction cooker heats up the inner pan quite quickly. Once the saute is done, I'll add the meat and usually a couple of cups of broth. You can either then slow cook or pressure cook from this point.
The cooker has a timer to set for the amount of time you want, then it can drop down to either turn off or keep warm. Pressure will release naturally, but can also open the quick release valve if you're needing to get dinner on the table.
The inner pot does come out for easy cleaning or even swap out for other dishes.
I'm pretty new to it, so I'd be interested to hear how others are cooking with it.