The #4 Product Introduction:
1.Color:white/blue/yellow and blue
2.Driving Chip:SSD1306
3.Interface Type:IIC
4.Pin Definition:GND,VCC,SCL,SDA


The #7 Product Introduction:
1.Color:white/blue/yellow blue
2.Driving Chip:SSD1306
3.Pin Definition:
!)GND:power ground
2)VCC:power positive (2.8-5.5V)
3)D0:clock wire
4)D1:data wire
5)RES:reset wire
6)DC:data/command
7)CS:chip select
4.Interface Type:SPI,IIC


Color: white, blue, yellow&blue


Size: #7 ,#4