1. Espressif (Espressif) official ESP32-WROVER module
2. The last ESP32 version: rev1
3. Wireless Internet
4. Bluetooth
5. 4MB flash memory
6. 8Mb PSRAM
7. Lithium battery interface, 500mA current charging
8. MicroSD memory card slot supports SPI mode, SD, usb and VIN (five doors) are all 1A fuse
