View system information
Open Device Info.
Under Device, you see the device name, serial number, and Wi-Fi MAC address. Under Software, you see the LuneOS version, codename, build tree, build number, and kernel version. On devices that run LuneOS on top of Android drivers, you also see the Android version and Android vendor version.
Checked against the LuneOS code and installed apps. Nobody has tried these steps by hand yet, so tell us if something differs.