The ESP32 drives the steppers via L298N H-bridge drivers, but it’s hard to say if there’s an RTC chip or if the microcontroller is just getting time via an NTP server.

The ESP32 costs about $7.00 where an ESP8266 (01) is $1.50 shipped. Yes, ESP32’s have an “LCD mode”, but the TV and Composite -out hacks on the ESP8266 are far more impressive.