No backlight, keeps displaying last content for a long time even when power down Ultra low power consumption, basically power is only required for refreshing Standard 40PIN GPIO extension header, supports series boards, Nano Onboard 4x Keys SPI interface, for connecting with other controller boards like Raspberry/ /Nucleo, etc. Onboard voltage translator, compatible with 3.3V/5V MCUs Operating voltage: 3.3V/5V Interface: 3-wire SPI, 4-wire SPI Outline dimension: 85mm x 56mm Display size: 57.288mm x 38.192mm Dot pitch: 0.217 x 0.217 Resolution: 264 x 176 Grey scale: 4 Full refresh time: 6s Refresh power: 24mW(typ.) Standby power: Less than 0.017mW Viewing angle: 170degree : .com//2.7inch_e-Paper_HAT Colour:blue Material: PCB Package Contents: 1 x 2.7 inch e-Paper HAT 1 x RPi screws pack 1 x 20cm 8Pin Cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.