It compatibles with for R3 and , , 51 MCU, STIM 32, etc. No backlight is required, and the display unit can be self-luminous. It has ultra-high contrast, bright and clear dots, and it is easy to read even small fonts There are no fonts embedded in the OLED controller, users can create fonts through font generation software. Resolution:128 x 64 View angle:more than the 160 degree Support voltage:3.3V-5V DC Power consumption:0.04W during normal operation, full screen lit 0.08W Embedded Driver IC:. Communication:I2C/IIC Interface, only need two I / O ports Colour:Blue & Yellow Material:plastic Size:0.96 inch Package Contents: 5 * 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.