Features:
OLED display, no need backlight, self-illumination, the display performance is better than the traditional LCD display, also lower consumption.
Driver IC: SSD1306
Size: 0.91 inch OLED
Resolution: 128 x 32
IIC interface
Display Color: Blue

Pin Description:
GND: Power Ground
VCC: Power + (DC 3.3 ~5v)
SCL: Clock Line
SDA: Data Line