Those who love the radically reduced, purist face of the Tangomat model but don’t want to relinquish a second time zone may choose the Tangomat GMT Plus and do as follows: shortly before landing in a foreign country, ask for the time difference, then press a button to set the new time zone on the Tangomat GMT Plus. It’s not necessary to count while pressing the button, because the difference is shown in a small window at the nine o’clock position.