M5Stack's K048 ESP32 CoreInk touch-enabled development kit with 1.5” e-ink display has low power consumption and can retain the image even if power to the device is terminated. The K048 1.54" e-ink display is easy on the eyes, making it a great choice for reading or viewing for long periods of time.

For control, the CoreInk integrates a multi-function button, a physical button, integrated status LED, and buzzer. The device also includes a 390 mAh Lipo, RTC (BM8563) for controlling accurate timing and deep sleep functionality. CoreInk features independent reset and power buttons, expansion ports (HY2.0-4P, M-BUS, and HAT expansion) for attaching external sensors to expand functionality and for unlimited possibilities.