The processor core of the keyestudio ESP32 board is the ESP32-WROOM-32D module. 

The ESP32-WROOM-32 is a universal Wi-Fi+BT+BLE MCU module, with powerful functions; can be used in low power sensor networks. The core of this module is the ESP32-D0WDQ6 chip, which is scalable and adaptive. The two CPU cores can be individually controlled. 

The ESP32 integrates a wide range of peripherals including capacitive touch sensor, Hall sensor, low noise amplifiers, SD card and Ethernet interfaces, high speed SDIO/SPI, UART, I2S and I2C, etc. 

It also integrates traditional Bluetooth, Bluetooth low energy and Wi-Fi for a wide range of uses. 

The ESP32 chip's sleep current is less than 5μA, suitable for battery-powered wearable electronics. 

The module supports data rates up to 150 Mbps; antenna output power of 20 dBm for maximum wireless communication. 

The ESP32 integrates a wide range of peripherals including capacitive touch sensor, Hall sensor, low noise amplifiers, SD card interfaces, Ethernet interfaces, high speed SDIO/SPI, UART, I2S and I2C, etc. 

It also integrates traditional Bluetooth, Bluetooth low energy and Wi-Fi for a wide range of uses. 

The ESP32 chip's sleep current is less than 5μA, suitable for battery-powered wearable electronics. 

The module supports data rates up to 150 Mbps; antenna output power of 20 dBm for maximum wireless communication.