Features: Brand new and high quality Compact and portable design: small size, light weight, easy to carry and install, suitable for various scenes. Black gold armor design: the unique black gold armor case is durable, resistant to pressure and shock, which enhances the stability and reliability of the product. Powerful performance: It adopts H3quadcore processor to provide powerful computing power and fast response speed. Good compatibility: Suitable for all kinds of software and hardware, easy to integrate into existing system and reduce the complexity of development and deployment. Technology enthusiasts: suitable for students, engineers and makers who are interested in embedded system and underlying development. Specifications: Material:Metal Model: AllwinnerH3 Frequency: 4x CortexA7 Up to 1.2GHz RAM: 256MB/512MB Ethernet: 10/100M MicroUSB: MicroUSB2.0, Power In, TypeA USB Host: TypeAx1, 2.54mm pinx2 GPIO: 2.54mm 36pin. It includes UART, I2C, etc Serials Debug Port: 2.54mm 4pin header Working Temperature: -20℃ to 70℃ Power:MicroUSB DC5V/2A Package Includes: 1 Set Development Board note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.