The Raspberry Pi Zero W extends the Pi Zero family. The Pi Zero W has all the functionality of the original Pi Zero, but comes with with added connectivity, consisting of :

 ** 802.11 b/g/n wireless LAN

 ** Bluetooth 4.1

 ** Bluetooth Low Energy (BLE)

Like the Pi Zero, it also has:

 ** 1GHz, single-core CPU

 ** 512MB RAM

 ** Mini HDMI and USB On-The-Go ports

 ** Micro USB power

 ** HAT-compatible 40-pin header

 ** Composite video and reset headers

 ** CSI camera connector