It features Allwinner quad-core A7 processor H3, and has 512M DDR3 RAM, onboard WiFI & bluetooth module and an OV5640 camera interface.
It works with Linux variants such as Ubuntu Core.
The for NanoPI Duo2 is tiny and compact with rich interfaces and ports. It takes power input from its MicroUSB port and can be booted from a MicroSD card. It works with general bread-boards. Interface pins such as USB, SPI, UART, I2C, PWM, IR, Audio input & output and Fast Ethermet etc are populated.
The for NanoPI Duo2 supports software utilities such as WiringNP and Python etc. These are all open source. It is suited for various loT applications.

CPU: Allwinner H3, Quad-core Cortex-A7 Up to 1.2GHz
DDR3 RAM: 512M
Connectivity: 10/100M Ethernet
WiFi: 802.11b/g/n
Bluetooth: Bluetooth V4.0 of 1, 2 and 3 Mbps
Key: GPIO Key
USB Host: 2.54mm pin x2, exposed in 2.54mm pitch pin header
MicroSD Slot :1
MicroUSB: OTG and power input
Debug Serial Interface: exposed in 2.54mm pitch pin header
Audio input/output Interface: exposed in 2.54mm pitch pin header
GPIO1: 2.54mm spacing 16pin. It includes UART, SPI, I2C, Audio etc
GPIO2: 2.54mm spacing 16pin. It includes USB,10/100M Ethernet, IO etc
Power Supply: DC 5V/2A
PCB Dimension: 25.4 x 55mm
Material: PCB
Colour: Black

Package Contents:
1 x Development Board
1 x Antenna
2 x Pin Header