In addition to the larger screen the Aura One is also the first ereader to feature a frontlight with
adjustable color temperature so that you can filter out blue light if you prefer.
Frontlights — Even though both Kobos have frontlights with
adjustable color temperature, the colors are a lot different between them at both ends of the spectrum (see video starting at 1:40).
Not just other brands like the Nook Glowlight 3 and Kobo models that offer more storage space and have frontlights with
adjustable color temperature, but also other Kindles.
The new Kobo has a frontlight with
adjustable color temperature, and it has twice as much internal storage space with 8 GB, although it no longer has a memory card slot for expansion.
It's very thin and lightweight for its size, and it was the very first ebook reader to feature a 7.8 - inch E Ink screen, and it was also the first ereader to offer a frontlight with
adjustable color temperature.
One of the surprising things about the new Kindle Oasis 2 is the fact that it doesn't have a frontlight with
adjustable color temperature.
There's
no adjustable color temperature like on the Kobo Aura One and Nook Glowlight 3, but it does have a sensor to automatically adjust the frontlight based on ambient lighting conditions.
Sunlight legibility is made easy by sufficient brightness and
adjustable color temperature, and IPS technology provides great viewing angles.
All but the Lux 800 have
adjustable color temperatures.