To recap, here’s the full feature list for Zero W:

    1GHz, single-core CPU
    512MB RAM
    Mini-HDMI port
    Micro-USB On-The-Go port
    Micro-USB power
    HAT-compatible 40-pin header
    Composite video and reset headers
    CSI camera connector
    802.11n wireless LAN
    Bluetooth 4.0

10$
https://nextinpact.com/news/103477-raspberry-pi-zero-w-wi-fi-et-bluetooth-pour-10-dollars-boitier-officiel.htm