3.7inch E-Paper E-Ink Display Module for Raspberry Pi Pico, 480×280, Black / White, 4 Grayscale, SPI

Features at a glance

•     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
•     SPI interface, requires minimal IO pins
•     Onboard voltage translator, compatible with 3.3V / 5V MCUs
•     Comes with development resources and manual (Raspberry Pi Pico C/C++ and MicroPython examples)

Specifications
operating voltage :    3.3V/5V    
display color :    black, white
resolution :    480×280 pixels    
grey scale :    4
interface :    3-wire SPI, 4-wire SPI    
viewing angle :    >170°
partial refresh time :    0.3s    
full refresh time :     3s
outline dimensions :    95.3 × 56.9mm    
display size :    81.12 × 47.32mm
refresh power   : 26.4mW (typ.)    
standby current :    dot pitch :    0.169 × 0.169mm

advantages of EINK

E-paper display utilizes microcapsule electrophoretic technology for displaying, the principle is: charged particles suspended in clear fluid will move to sides of microcapsule when electric field is applied, making the microcapsule become visible by reflecting ambient light, just as traditional printed paper.
E-paper display will clearly display images/texts under lamplight or natural light, requires no backlight, and features nearly up to 180° viewing angle. It is usually used as e-reader due to its paper-like effect.           

Raspberry Pi Pico header compatibility

onboard female pin header for direct attaching to Raspberry Pi Pico

Onboard SPI control interface
for use with other controller boards like Raspberry Pi/Jetson Nano/Arduino/STM32

VCC     3.3V/5V
GND     Ground
DIN     SPI MOSI pin
CLK     SPI SCK pin
CS     SPI chip selection, low active
DC     Data / Command selection (high for data, low for command)
RST     External reset, low active
BUSY     Busy status output

Onboard Voltage Translator

compatible with 3.3V / 5V MCUs

Pinout definition