128*64 LED display module for Arduino, supports many control chip. Fully compatible with for Arduino, 51 Series, MSP430 Series, STM32 / 2, CSR IC, etc. Ultra-low power consumption: full-screen lit 0.08W Super high brightness and contrast are adjustable With embedded driver/controller Interface type is IIC Pin Definition: GND, VCC, SCL, SDA Pins: 4 pins Voltage: 3V ~ 5V DC Working Temperature: -30 ° ~ 70 ° Drive Duty: 1/64 Duty High resolution: 128 * 64 Panel Dimensions: 26.70* 19.26* 1.85mm/1.03*0.76*0.07 inch(approx) Active Area: 21.74* 11.2mm /0.86*0.44 inch(approx) Driver IC: SSD1306