Yes but have you seen this? 
Crowd Supply
Sensor Watch
A hackable ARM Cortex M0+ upgrade for a classic Casio wristwatch
Login to reply
Replies (5)
I have NOW 👀
Oh shit, that's awesome 👀 TIL
Huh... neat.
Looks like it was funded (above the target) more than a year ago but hasn't shipped yet?
Or perhaps shipping tomorrow the 31st...