This is a very readable Grove 4 Pin Connector I2C OLED module. Due to the high contrast of an OLED display, it is readable even at small fonts. This display is made of 128x64 individual white OLED pixels, each one is turned on or off by the controller chip. Because the display makes its own light, no backlight is required. This reduces the power required to run the OLED. This breakout is used with an I2C interface. The design is completely 3.3V/5V-ready, with an onboard regulator and built in boost converter. Connects to either Arduino or Raspberry Pi controllers with no level shifters required. No Grove Cable included. No external reset pin required. Software drivers are available on the SwitchDoc Labs (www.switchdoc.com) product page.