Both run a proprietary Linux-based OS called Codex. It's slightly heavier due to an aluminum chassis, but now sells for $299. It's thinner (just under 5mm), has a slightly larger (10.3 inch) screen, and has a dual-core Arm CPU and twice the RAM at 1GB. The current reMarkable 2 was announced in 2020 and launched in 2022 at $399.

This was an A5-sized (10.1 inch diagonal), 7mm thick tablet with a 1872×1404 touch-sensitive e-ink screen, Wi-Fi and microUSB connections, and a batteryless stylus. In 2017 it crowdfunded the launch of the $499 reMarkable 1. Founder Magnus Wanberg, whose site describes him as 'a true paper person,' set the company up a decade ago, to make a thin, light device for taking handwriting and drawing notes and synchronizing them wirelessly to the cloud. ReMarkable is a small Norwegian company with a single product range: an e-ink tablet, aimed at people who prefer handwriting notes on paper. It is interesting because it significantly widens the appeal for the reMarkable 2 itself, although the move takes it into a significantly more crowded and competitive market. The new Type Folio is a $199 (£165) keyboard cover for the reMarkable 2 e-ink tablet.

Surface pro 8 keyboard cover