Equipped with Xtensa 32-bit LX7 dual-core processor up to 240MHz main frequencySupports 2.4GH z Wi-Fi ( 802.11 b/g/n) and Bluetooth 5 (LE) Built in 512KB of SRAM and 384KB ROM onboard 4MB Flash memory and 2MB PSRAMCastellated module and onboard ceramic antenna allows soldering direct to carrier boards. Supports flexible clock module power supply independent setting and other controls to realize low power consumption in different scenarios