The four-digit key OLED display module has a 0.96-inch 128x64 pixel OLED screen on board, and is equipped with four touch buttons. It communicates with the outside through the IG communication interface and the key interface. The module has the characteristics of small size, fast response, and stable performance. Connect to an external microcontroller through pins. Onboard four touch buttons, and lead to the key interface. Onboard 0.96-inch OLED screen, and leads to IC communication interface. Colour:Blue Material:PCB+electronic components Package Contents: 2 x 0.96 inch OLED display module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.