This is the ESP32 board from Wemos. The Lolin32 is a great board housing the most powerful espressif chip (dual core, WiFi + BLE). Plus the Lolin32 has a built in LiPo battery charger, so you can now make truly wireless projects. The ESP32 blows away every possible comparison within the Arduino World. Definitely the ultimate geeeky device. You must join the ESP32 revolution that has literally revolutionized the maker world.
*Lithium battery interface, 500mA Max charging current