This OLED display module is small, only 0.96” diagonal, it is made of 128x64 individual blue OLED pixels, each one is turn on or off by the controller chip. It works without backlight, that is, in a dark environment, OLED display is higher compared to that of LCD display, you will like the miniature for its crispness. 
    This module uses I2C to communicate with microcontroller such as Arduino. Compares to the 0.96" OLED 128x64- Blue, this module has blue&yellow colors, but please very notice that this is a single color OLED indeed, that means that top quarter is yellow, and the rest ¾ is blue. The color can not be changed.