As far as I know, there are 3 main differences between these two products (which actually have the same name, this one being the "updated" version):
- The battery can be switched off (so it can be used as a stand without necessarily starting to recharge).
- USB-C port on the side rather than on the bottom edge, allowing you to charge the iPhone while recharging the battery in the stand position
- Reduced heat (I haven't tested the other one, but some tests mention it)
I've had it for a few weeks now and I'm very happy with it!