1.54 inch OLED display

Specifications:

Driver Chip: SSD1309 driver

Supported Interface: 4-pin IIC
Resolution: 128 × 64
Display Size: 1.54 inches
Display Color: Blue 
Module Size: 42.4 × 38 mm

Active Display Area: 35.052 × 17.516 mm
Pixel Pitch: 0.274 × 0.274 mm
Pixel Size: 0.254 × 0.254 mm

Number of Pins: 5 PIN (2.54mm single-row header; Pin 5 “RES” reset pin is unused by default, so it can be used as 4 pins)

Viewing Angle: Full viewing angle
Operating Temperature: -40°C ~ 70°C
Operating Voltage: 3.3V – 5.5V (Do not use other power supplies)