Image is Representational - See Manufacturer Specs | Slim Character OLED - White - 4x20 Character - 2.4V ~5.5V - 92.00 x 31.5 mm The NHD-0420CW-AW3 is a 4x20 Slim Character OLED. It features a White Display. Character size is 4.77 x 2.97 mm. It uses an 4/8-bit Parallel SPI or I2C Interface. Voltage requirement is 2.4V ~5.5V. Controller required is the US2066