WaveShare 4.2 inch E-Ink Cloud Display with WiFi and Bluetooth

This is a 4.2 inch E-Ink/E-Paper display module from Waveshare. The module has an ESPRESSIF ESP32-WROOM-32 that you can control with 2.4GHz Wifi or Bluetooth 4.2. The module comes with a 3000mAh lithium battery that can be charged via a USB-C port that also supports Quick Charge. The e-ink display consumes almost no power when an image is displayed continuously. This is particularly suitable for applications where the same information is displayed most of the time, such as price tags or shelf labelling.
Info: To achieve a longer battery life, the display must be woken up from standby mode via the integrated button before refreshing the display.

Features:
3000mAh lithium battery
Up to 3000x refresh with fully charged battery
Wifi 2.4GHz
Bluetooth 4.2
Viewing angle >170

Technical details:
Manufacturer: Waveshare
Manufacturer SKU: 18525
Connection: 2.4GHz, Bluetooth 4.2
Display size: 4.2 inch
Resolution: 400x300 Pixels
Full Refresh: 4s
Colour: Black/White
Battery: 3000mAh Lithium
Dimension: 96.5 x 85 x 8mm
Weight: 117g

Scope of delivery:
1x 4.2 inch E-Ink Cloud Display with WiFi and Bluetooth.
1x 3000mAh Lithium battery.