4.2 inch E-Ink Cloud Display with WiFi and Bluetooth

This is a 4.2 inch E-Ink/E-Paper Display Module by Waveshare. The module features an ESPRESSIF ESP32-WROOM-32 that can be controlled via 2.4GHz wifi or Bluetooth 4.2. The module comes with a 3000mAh Lithium battery, which can be charged via a USB-C port that also supports Quick Charge. The E-Ink Display consumes almost no power when displaying an image continuously. This is especially suitable for applications where the same information is displayed most of the time, such as price tags or shelf labeling.  

Info: To achieve longer battery life, the display must be awakened 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° 

Documentation: 

• Waveshare Wiki

Technical Details: 

• Manufacturer: Waveshare 
  
• Manufacturer SKU: 18525 
  
• Connection: 2.4GHz, Bluetooth 4.2 
  
• Display Size: 4.2 inches 
  
• Resolution: 400x300 Pixels 
  
• Full Refresh: 4s 
  
• Color: Black/White 
  
• Battery: 3000mAh Lithium 
  
• Dimensions: 96.5 x 85 x 8mm 
  
• Weight: 117g 

Package Includes:  

• 1x 4.2 inch E-Ink Cloud Display with WiFi and Bluetooth 
  
• 1x 3000mAh Lithium Battery