Display

The Vufine + display plugs into the HDMI out of the Raspberry Pi. The picture is sharp. So this was a good upgrade.

Power Bank

I use a Ravpower power bank. It has a power LED display on it, so it is easy to see when it is time to charge! The power bank has one 2.4 A output for the Raspberry Pi and one 2.1 A output for the viewfinder.

Software

I use Calibre for E-Book reading. I did install gcc/clang compilers, KDevelop, VLC video viewer, open office and others.