the timer getting dirty is not the only issue.
you don't always have hands free to fiddle with a watch.
more often than not, both hands are doing something, and setting a timer is... timely.
you don't always have hands free to fiddle with a watch.
more often than not, both hands are doing something, and setting a timer is... timely.
You can still hold something in the hand that the watch is strapped to.
sometimes you're putting something in the oven, sometimes you're mixing something (holding the bowl and whip)
tons of instances where two hands are in use and voice commands help.