This is a no-name Arduino Uno R3 clone with the ATmega16U2 used as USB-to-serial interface as in the genuine Uno, rather than the cheaper alternatives used in lots of clones. So perhaps a slightly better build quality than the average clone.

• Microcontroller: Socketed (for easy replacement) ATmega328P
• Clock Speed: 16 MHz ceramic resonator
• 14 digital input/output pins (6 can be PWM outputs)
• 6 analog inputs
• Operating Voltage: 5V
• Input Voltage: 7-12V
• 3.3V Power Out: up to 50 mA
• I/O Pin Out: up to 20 mA
• Digital I/O Pins: 14 (6 support PWM output)
• Analog Input Pins: 6 (with 10-bit resolution)
• Flash Memory: 32 kB (2kB used by bootloader)
• SRAM: 2 kB
• EEPROM: 1 KB
• Serial I/O: 4 UARTs, one SPI and one I2C interface

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• Arduino Uno R3 official page
• Arduino Uno R3 schematic

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