Specs: raspberry pi 3 model b specifications:
processor: broadcom bcm2837 quad core arm cortex-a53 64-bit @ 1.2ghz
gpu: broadcom videocore iv @ 400mhz
memory: 1gb lpddr2 sdram
storage: microsd card slot for os and storage
usb ports: 4x usb 2.0
networking: 10/100 mbps ethernet
wireless: 802.11n 2.4ghz wi-fi
bluetooth: bluetooth 4.1 + ble
gpio: 40-pin gpio header
video output: full-size hdmi, 3.5mm 4-pole composite video and stereo audio jack
display/camera: mipi dsi display port, mipi csi camera port
power: 5v 2.5a via micro usb port
operating system: supports raspberry pi os, ubuntu, windows 10 iot core, and more
dimensions: 85mm x 56mm x 17mm