Compact size and split design. Designed using stamp hole sinking gold technology, highly integrated packaging, making it easier to embed and combine into various product applications Dual core processor. On board dual core ARM Cortex M0+processor, running at frequencies up to 133 MHz 20 multifunctional GPIO pins. Supports pin configuration function for convenient and flexible development and integration Supports CIC++, MicroPython, Arduino Dual core ARM Cortex MO+processor with a flexible clock operating at frequencies up to 133MHz