Besides the features of the K210 and MAIX-I module,  MAIX Go has the following impressive features: onboard omnidirectional, bottom-ported, I2S digital output MEMS Microphone; support for the Sipeed R6+1 Microphone Array board with an FPC10 connector and a 2 x 3 W speaker and an onboard digital triaxial accelerometer MSA300; onboard 32.768 kHz crystal connected to the STM32F103; support for 2.4 GHz 802.11. b/g/n; support for self-elastic card holder; and a three-way dial switch and one Reset push button. All GPIOs are connected to a 2*20 2.54 mm header.  Just connect the USB Type-C cable to complete the download.