General description No backlight is required for this 2X 2.9 Inch E-Ink Display, which can maintain the last screen display for an extended period. It features very low power consumption, activating primarily during refresh cycles via the SPI control interface. This display is compatible with various main control boards, including Arduino Nano and STM32, and includes an onboard level conversion chip for compatibility with both 3.3V and 5V microcontroller interfaces. A manual with sample programs is provided for ease of use. Technical specifications Operating voltage: 3.3V/5V Communication interface: 3-wire SPI, 4-wire SPI Dimensions: 89.5 x 38 mm Display size: 66.89 x 29.05 mm Resolution: 296 x 128 pixels Display color: black and white Gray level: 2 Partial refresh time: 0.3 seconds Refresh consumption: 26.4 mW (typical) Standby current: Less than 0.01 µA Viewing angle: More than 170° Material: Plastic + Metal Package Contents 2 x Screen 2 x 20 cm Connection Cable Other information