The Kobo Sage is an e-reader that includes note taking capabilities. The pen costs extra, but allows you to write on books or in a note application, which makes it useful for some.
Use your Kobo eReader as a notebook – Rakuten Kobo
Review: 7 Kobo Libra 2 vs 8 Kobo Sage, which e-ink e-reader should you choose? - Ausdroid
KOBO SAGE Review: 1 Month Later
𝗔 𝗦𝗖𝗥𝗘𝗘𝗡 𝗧𝗛𝗔𝗧 𝗟𝗢𝗢𝗞𝗦 & 𝗙𝗘𝗘𝗟𝗦 𝗕𝗘𝗧𝗧𝗘𝗥 - Kobo Sage's 8 flush, high definition E Ink Carta 1200 touchscreen offers deep contrast, super-clear readability,
Kobo Sage | eReader | 8” HD Glare Free Touchscreen | Waterproof | Adjustable Brightness and Color Temperature | Blue Light Reduction | Bluetooth
Review of Kobo Sage e-reader
The Best E-Readers for , Kobo and Other Platforms - Buy Side from WSJ
Kobo Sage review: This stellar e-reader has identity issues
The Kobo Sage is Better Than The Kindle Paperwhite! And worse
Kobo Sage review: This stellar e-reader has identity issues
Kobo's Elipsa and Sage e-readers are better for reading than writing - The Verge
What's New about Kobo Sage and Kobo Libra 2
Hands on Review of the Kobo Sage e-reader - Good e-Reader
Kobo Sage: the bigger Kobo, is it worth the bigger price?
Kobo Sage
White balance difference Libra 2 vs Sage : r/kobo