"Tell time on Apple Watch"
I accidentally got my Apple Watch to read the time aloud, which was nifty. Turns out that you can do this by holding two fingers on the watch face for a bit:
Hear the time: Open the Settings app on your Apple Watch, tap Clock, then turn on Speak Time. Hold two fingers on the watch face to hear the time.
There are a couple of other neat options I didn't know about in there.
Tell time on Apple Watch
On Apple Watch, see the time on the watch face, feel the time as taps on your wrist, and hear the time spoken aloud. Ask Siri or see 24-hour time.