Broadcom BCM2837 64bit Quad Core Processor powered Single Board Computer running at 1.2GHz 1GB RAM
BCM43143 WiFi on board
Bluetooth Low Energy (BLE) on board
40pin extended GPIO
4 x USB 2 ports
4 pole Stereo output and Composite video port
Full size HDMI CSI camera port for connecting the Raspberry Pi camera
DSI display port for connecting the Raspberry Pi touch screen display
Micro SD port for loading your operating system and storing data
Upgraded switched Micro USB power source (now supports up to 2.4 Amps)
Same form factor as the Pi 2 Model B, however the LEDs have changed position