ESP-WROOM-32

Two independently-controlled CPU cores with adjustable clock frequency, ranging from 80 MHz to 240 MHz +19.5 dBm output at the antenna ensures a good physical range
Classic Bluetooth for legacy connections, also supporting L2CAP, SDP, GAP, SMP, AVDTP, AVCTP, A2DP (SNK) and AVRCP (CT)
Support for Bluetooth Low Energy (BLE) profiles including L2CAP, GAP, GATT, SMP, and GATT-based profiles like BluFi, SPP-like, etc
Bluetooth Low Energy (BLE) connects to smart phones, broadcasting low-energy beacons for easy detection
Sleep current is less than 5 µA, making it suitable for battery-powered and wearable-electronics applications
Integrates 4 MB flash
Peripherals include capacitive touch sensors, Hall sensor, low-noise sense amplifiers, SD card interface, Ethernet, high-speed SPI, UART, I2S and I2C
Fully certified with integrated antenna and software stacks

Description
ESP-WROOM-32 contains the ESP32 SoC, flash memory, high-precision discrete components, and a PCB antenna which provides outstanding RF performance in space-constrained applications.
Chip Embedded
ESP32-D0WDQ6
Dimensions (mm) 18x25.5x2.8
Pins 38
Flash (MB) 4
PSRAM (MB) N/A
Antenna PCB antenna
Development Board ESP32-DevKitC