Compatibility: white 0.91 inch OLED module is designed to display graphic information and text information directly on your microcontroller project; Compatible with , , 51 MCU, STIM 32, etc. Product information: resolution is 128 x 32; View angle is more than 160 degrees; Supporting voltage is from 3.3V to 5V DC; Power consumption during normal operation is 0.04W, full screen lit is 0.08W Driver and communication: embedded driver IC is ; Communication is IIC/ I2C interface, only needs 2 I/O ports; Compatible with , Pi-Star, and compatible with Self-luminous design: the OLED display module is self-luminous, so that no backlight is required; It features high contrast, bright and crisp dots, which is convenient to read tiny fonts Create fonts: there are no fonts embedded in the OLED controller, so users can use the font generation software to create the fonts colour: blue Material: plastic Size: 38x12mm Package Contents: 10 set x OLED Display modules in 0.91 inches 128 x 32 blue Only the above package content, other products are not included. Note: Light 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.