A system for digitally displaying watch functions and setting the value of these functions with a single actuator button wherein the button is movable to establish a first mode of operation to sequentially display the watch functions and is alternatively movable to establish a second mode of operation...http://www.google.fr/patents/US4059955?utm_source=gb-gplus-shareBrevet US4059955 - One button digital watch and method of setting the display
One button digital watch and method of setting the display
