0.91 inch I2C SSD1306 I2C OLED Display Module, I2C Blue/White OLED Display Module DC 3.3V~5V OLED Display Driver for Arduino 2/4pcs OLED display, no need back- illumination, self-illumination, display color: blue/white. Note: These I2C OLED display modules come without pin headers Display performance is better than traditional LCD display, also lower power consumption; IIC (I2C communications) simplifies connections Use with Ar duino, ESP8266, ESP32, STM32, etc.; 3.35v power supply; Working temperature: -40-85; Resolution: 128x32 Product Description Description: OLED display, no need backlight, self-lighting. Display performance is better than traditional LCD display, power consumption is also lower. Specifications: IC Driver: SSD1306 Size: 0.91 inch OLED Resolution: 128x32 Size: 38*12mm Interface Type: IIC Interface Display Color: Blue, White Pins Description: GROUND: Power Ground VDC: Power Supply + (dc 3.3~5v) Operating Temperature: -40~ 85 SCL: Clock Line SDA: Data Line Package Including 2/4*0.91 inch I2C SSD1306 Blue/White OLED Display Module