When you connect it to a computer with a USB cable, it shows up as a disk drive named CIRCUITPY
It's running simple CircuitPython code that fetches the date and time from an Internet NTP server, and then displays it using the ESP32 internal RTC.
On this device, the connection to the internet is automatically enabled by CircuitPython, assuming you have created an .env file that contains your WiFi connection info, like this:
CIRCUITPY_WIFI_SSID='MySpectrumWiFi92-2G' CIRCUITPY_WIFI_PASSWORD='mypassword'
Open source code file clock.py is on Github at:
https://github.com/gmeader/featherESP32