The Raspberry Pi Zero W takes the beloved and extremely popular Pi Zero and adds wireless LAN and Bluetooth, making it perfect for embedded Internet of Things projects. It?s a tiny, low cost, low power mini computer with mini-HDMI, and the same 40-pin GPIO that all other Raspberry Pi boards use.

1Ghz, Broadcom BCM 2835 single-core processor
512 MB of RAM
1 micro USB port for power supply
Compatible with existing HATs
Composite video and reset headers
CSI Camera Connector
Unpopulated 40-pin GPIO connector (requires soldering)
On-board Wireless LAN ? 2.4 GHz 802.11 b/g/n (BCM43438)
On-board Bluetooth 4.1 HS Low-energy (BLE) (BCM43438)