"It's a quarter past three bumps"
Vintage & Modern wristwatches for the blind.
Timekeeping for the sightless is an issue dealt with in variety of timepieces featured below. A variety of styles including traditional pocket watches or wristwatches with flip-top covers revealing a tactile dial, strengthened hands and protuberances for the hour/minute markers. (and yes, I couldn't wait to write 'protuberances')
Top half of domino style dial for hours, bottom for minutes
Student prototype - via Wristdreams
More common flip-top Braille wristwatch Cortebert c.1955
1912 Hunter cased pocketwatch with numeral Braille markers