The second generation of Core series development modules. Equipped with ESP32-D0WD-V3 chip using Xtensa 32-bit 240 MHz LX6 dual core processor. The module has also integrated WiFi and Bluetooth wireless communication modules , as well as 16 MB Flash memory and 8 MB PSRAM. The device is powered and programmed using a USB type C connector. Core 2 is equipped with 2" touch screen display as well as a built-in vibration motor and RTC clock system. The new generation is also an improved power supply system, the battery capacity has been increased to 390 mAh, and a diode informs us about the battery charge status. AXP192 is responsible for the power system. Physical, programmable buttons were replaced by capacitive buttons.