Smartphones have made information permanently accessible, but that accessibility comes at a price. The same device that shows you a reminder also delivers a notification for something unrelated, which leads to one more app opened, one more five-minute detour, and one more afternoon where the task you meant to remember sits unfinished somewhere in a mental stack. The problem isn’t access to information. It’s the medium through which it arrives.
The ZecTrix Note 4 approaches that with a different premise: what if the display that shows your tasks doesn’t connect to your attention the same way a phone screen does? It’s a 4.2-inch e-paper smart display, about the size of a palm, that attaches magnetically to a metal surface and stays there showing whatever you most need to remember, using almost no power to do it.
Designer: ZecTrix
The interaction model is deliberately minimal. Press the physical button, speak your task or reminder, and the device converts that into text and adds it to the display. The built-in AI voice assistant handles the transcription and task management, and the e-paper screen holds whatever it’s showing without any power draw between updates. The display also handles weather, clocks, focus timers, handwritten notes, images, and custom templates.
Hardware underneath is solid for something this compact. An ESP32-S3 dual-core processor with 8 MB of PSRAM and 16 MB of flash handles the AI processing and connectivity, backed by a 2,000 mAh battery, 2.4 GHz Wi-Fi, Bluetooth 5.0, NFC, a speaker, a microphone, and a USB Type-C port for charging. GPIO expansion is also available, which opens the platform to custom hardware additions.
The 97mm x 97mm x 8.75mm square chassis comes in three enclosure variants: an injection-molded Minimal Premium Edition designed for clean desk or kitchen wall placement, a standard Everyday Edition for DIY-minded users, and a Color Edition with open-source 3D model files for those who want to print their own. The magnetic backplate sticks firmly to any suitable metal surface without adhesive or mounting hardware.
For users who want more than a black-and-white display, there’s the Note 4C, which replaces the monochrome panel with a four-color E Ink screen that adds red and yellow to the palette. It runs on the same hardware platform but ships without the consumer AI firmware, positioning it instead as an open development device for people with ESP32 experience. The color panel is slower to refresh, typically over ten seconds per full update, making it better suited to status labels, family photo cards, or API dashboards that update occasionally rather than continuously.
The two products are deliberately distinct rather than tiered versions of the same thing. The Note 4 is a finished product with a lifetime AI voice service included; the Note 4C is an open starting point for a custom build. Both share the same physical form, so the choice comes down to how much of the software someone wants to supply themselves.
