The Funduino Uno R3 is fully compatible with Arduino UNO R3. The Funduino brand is marked on the board to distinguish it with the official Arduino products. It is 100% compatible with Arduino Uno software (select “UNO” in the Arduino IDE)
The board is ready-built with all headers.
|Operating Voltage (logic level)||5 V|
|Input Voltage (recommended)||7-12 V|
|Input Voltage (limits)||6-20 V|
|Digital I/O Pins||14 (of which 6 provide PWM output)|
|Analog Input Pins||6|
|DC Current per I/O Pin||40 mA|
|DC Current per 3.3V Pin||150 mA|
|Flash Memory||32 KB|
|Clock Speed||16 MHz|
This is from the Arduino official website.
The pinout is from an amazing website named pighixxx.com.
 UNO R3 schematic