I use this idea all the "time"![pun intended!]. I have more than one watch and when I'm not wearing the others, I pull "the pin" mechanism on the side to stop the time [as I am not wearing the watch, I don't wish to run the batteries down]. Then ,if I switch watches for the next day, I'll pull the pin on the watch I WAS wearing. And I remember right BEFORE putting the watch on to reset it to the proper time. This may seem like an inconvenient thing to do,but I've found it saves the batteries..
...and makes them last longer! I also turn "off" my watch at night!