Features:OOTDTY  OLED display, no need backlight, self-illumination,The display performance is better than the traditional LCD display, also lower consumption.How to connect:GND: Power GroundVCC: Power + (DC 3.3 ~5v)SCL: Clock LineSDA: Data LineSpecifications:Driver IC: SSD1306, IIC interfaceResolution: 128 x 32Display Color: WhiteSize: 4x1cm/1.57x0.39"Quantity: 1 PcNote:Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.Note: Due to the difference between different monitors, the picture may not reflect? the actual color?of the item. Thank you!No Retail PackagePackage Contents:1 x OLED LCD Display Module