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 Descriptions: GND: Power Ground VCC: Power + (DC 3.3 ~5v) SCL: Clock Line SDA: Data Line ProductSiteLaunchDate : 2019-07-22T18:40:08.521Z UnspscCode : 43211900