The Seeeduino V4.2 is a Arduino-compatible microcontroller board.
The Seeeduino is physically and electrically identical to the Arduino Uno, except it's in a different color. It also comes with two Grove sockets, for use with Grove peripherals and sensors.
It is compatible with all Arduino software, and can be programmed with the Arduino IDE.
Unlike most Arduino-compatible boards, it can operate in 5V or 3.3V mode, making it fully compatible with low-voltage sensors and peripherals.