This is an OLED monochrome 128x64 dot matrix display module with I2C Interface. Comparing to LCD OLED screens are way more competitive which has a number of advantages such as high brightness self-emission high contrast ratio wide viewing angle wide temperature range and low power consumption. It is compatible with Arduino / Raspberry Pi / Arduino DUE / AVR / ARM / PIC. Interface: I2C(3.3V / 5V logic level) Resolution: 128 x 64 Angle of view: >160 degree Display color: Blue Display size: 1.3 inch Driver IC: SH1106 Power supply: DC 3.3V~5V Operating temperature: -20~70'C Application: smart watch MP3 thermometer instruments DIY projects etc.