Wemos D1 R32 ESP32 development board with 4MB flash, WiFi, Bluetooth, and CH340G USB interface in Arduino Uno form factor.

Microcontroller: ESP32 Flash Memory: 4MB Clock Speed: Up to 240MHz Wireless Connectivity: WiFi and Bluetooth WiFi Data Rate: Up to 150 Mbps Output Power: 20.5 dBm at antenna USB Interface: Micro USB USB-to-Serial Converter: CH340G Form Factor: Arduino Uno Compatible Operating Voltage: 3.3V Digital I/O Pins: Multiple Analog Input Pins: Multiple Programming: Arduino IDE, ESP-IDF Compatible

