CPU: ARM Cortex-M0+ CPU(SAMD21G18) running at up to 48MHz

    Storage: 256KB Flash,32KB SRAM

    I/O PINs: 14 GPIO PINs,11 analog PINs, 11 digital PINs, 1 DAC output Pin

    Interface: 1 I2C interface,1 UART interface, 1 SPI interface

    Power supply and downloading interface: USB Type-C interface

    LEDs: 1 user LED, 1 power LED, two LEDs for serial port downloading

    Reset button: two reset button short connect to reset

    Power Pads: For the battery power supply

    Software compatibility: Compatible with Arduino IDE

    Projection cover for protecting the circuit

    Dimensions: 20x17.5x3.5 mm