An apple watch can speak the time.
I had a watch that did that in the 80s. It had a calculator with a full keypad on it also.
-press button- BONG The...Time...Is...1...52...PM
Even before digital, analog watches without a face were used by sightless for centuries as they could touch the hands on the pocket watch to know what time it was. I don't know of any time period since the dawn of personal timepieces where such a device was ever only for those with functional eyesight, let alone the mere presence of one on an individual immediately signifying that they had functional eyesight.
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