An electronic device including a case includes a glass and a back cover, the electronic device including at least one electronic module configured to calculate a current time, to execute plural functions and to provide information relating to the current time and to the functions to a display disposed underneath the glass. The electronic device further including a controller including at least one contact area allowing a user to act on the at least one electronic module, the at least one contact area being monitored by the electronic module at a scanning frequency.
