Of the boards examined, six of them have OLED displays, but one has an E-paper display. To summarize results, [Andreas] summarized his findings on these seven along with others in an online ...

It shares the same Seeed Studio XIAO ESP32-C3 microcontroller, 0.49 inch OLED display, and tiny 40 mAh LiPo battery.

As Hackaday revealed, this one comes with an E Ink display, a secondary OLED panel, and a keypad made of soft silicon that is encased within a see-through case.

However, with an ESP32-powered display, you can get all of the same functionality, too. I installed it on my Cheap Yellow Display (CYD), and it can do everything the Flipper Zero's Wi-Fi Devboard ...

The T-Display AMOLED Touch ESP32 is an advanced version of the well-known ESP32 board, now equipped with a touch interface. This addition transforms the board into a more interactive platform ...