Most language learning apps live on phones, competing with notifications, social media, and every other distraction fighting for your attention. Opening Duolingo between classes usually turns into five minutes of vocabulary followed by twenty minutes of scrolling through feeds you’ve already checked twice. Designers are starting to build tiny, single-purpose devices that turn fragmented time into focused practice instead of another excuse to stare at your phone screen until your eyes hurt.

The E-ink Vocabulary Card E2 is one of those tools, a chewing-gum-sized e-ink vocabulary device aimed at students but usable by anyone learning a new language. It pairs with a phone via Bluetooth to pull in study materials and memory modes from an app, then lets you review words on a 2.7-inch e-ink screen without opening your phone. It’s small enough to live in a pocket yet designed to feel like a dedicated learning tool.