The Reader Book 1 has a 6" Pearl E-ink screen (1024 x 758) that lack a frontlight or touchscreen. Navigation is managed through the d-pad below the screen. The Reader Book 2, on the other hand, has a lower resolution Pearl E-ink screen with a touchscreen but no frontlight.
Both models run Pocketbook's reading software on a 1Ghz CPU with 4GB internal storage, a microSD card slot, and a 1Ah battery. According to the spec sheet, neither device has a frontlight, audio, or Wifi. They offer similar support for ebook formats (Epub, PDF, FB2, Mobi, Djvu) and document formats (Doc, chm, txt, rtf, html).
The Reader Book 1 is selling for 5,999 rubles (about $91 USD), while the Reader Book 2 lists for 6,999 rubles (about $106 USD).
In short, what we have here are a couple ereaders intended to compete with the basic Kindle. Both gave up a frontlight, audio, and Wifi to cut cost, and they also trade screen resolution for touchscreen.
That's a fair trade, although Pocketbook should have gone all the way and also added page turn buttons. That would make up a lot for the lack of a touchscreen on the Reader Book 1.