The TTGO T7 Mini32-WROVER from LilyGO is a microcontroller based on an ESP32. The USB to serial converter makes it easy to program, even as an Arduino. The board has a micro USB connection with which it can be programmed and/or powered (micro USB cable not included).

Specifications:
ESP32 chip (WROVER module) (240Mhz dual core processor)
Flash memory: 4MB
PSRAM: 8MB
Built-in Wi-Fi
Built-in Bluetooth
USB to serial converter: CP2104 or CH9102F
Built-in Li-ion/Li-Po battery charging circuit: TP4054 chip can charge up to 500mA
Battery connector: 2p Molex Picoblade
Battery cable included
Dimensions PCB: See images
See the following page for more information (including the pinout) and to get started with the board: TTGO-T7 Mini32 - ESP32 WROVER
To program the board with the Arduino IDE, select the 'ESP32 Wrover Module' in the board manager.

Note: The pins on the board are directly connected to the ESP32 chip and are therefore only suitable for 3.3V signals.