[Features] Power-saving display :I2c oled display performance is better than traditional LCD display,IIC (I2C communication) simplified connection; Please note that these I2C OLED display modules do not come with needles. More details: Compatible with Arduino, ESP8266, ESP32, STM32, etc. 3.35V power supply; Working temperature: -40-85 ; Resolution :128 x 32 Good compatibility: This i2c oled display module is compatible with Raspberry Pi 4B/3B+/3B/2B/Zero, compatible with Arduino, also compatible with ESP8266, ESP32, STM32, etc. [product information] Product name:oled display Color:blue Size:0.91" Packing list (you can get after purchasing one item): oled display*5 Please understand: 1. Due to the long shipping time, the item may be damaged during the shipping process, if the item is damaged, please leave us a message through the official website immediately before posting comments, and I will solve the problem for you. 2. Due to manual measurement, the size may have an error of 1-3cm. 3. Colors may vary from monitor to monitor.