Raspberry Pi Zero W

    Raspberry Pi Zero W Embedded Computer is an upgraded version of Raspberry Pi Zero with built-in Wifi and Bluetooth, the machine is equipped with 1GHz BCM2835 CPU, 512Mb RAM, HDMI port, CSI camera port, 40 pins GPIO, MicroSD card slot , Micro USB host port,…, is the most compact line in the Raspberry Pi Series
BCM2835 (same as Pi 1) but up-clocked to 1GHz, so 40% faster
    512MB RAM
    802.11 b/g/n wireless LAN
    Bluetooth 4.1
    Bluetooth Low Energy (BLE)
    Mini-HDMI port
    Micro-USB OTG port
    Micro-USB power
    HAT-compatible 40-pin GPIO connector (same pinout as A+/B+/2B)
    Composite video and reset headers
    CSI camera connector
    Size is 65mmx30mmx5mm