Review on ESP32 WROOM 32 Development ESP 32S Bluetooth ForArduino by Ken Cudal

This is an ESP-WROOM-32 board well known in the Arduino community. Programming them isn't as common as regular Arduino boards, but it's not that difficult once the environment is set up. It took about 45 minutes total including searching the web and downloading. As for the quality of the board and everything else, it lives up to expectations. That's about what you'd expect from a mass-produced toy. It's not aerospace grade or what's packed into an iPhone, but it gets the job done.