I travel overseas frequently and need a watch that can keep "home" time, but also show "local" time wherever I am.  I set the digital time to "home", but then can easily adjust the analog display of the watch hands to the "local" time wherever I am to glance at during business meetings. My first Casio watch of this sort was purchased in Tokyo at an Akihabara sidewalk shop.  It worked perfectly for fifteen years, but ultimately started to leak water through the watch stem seal, and the stem eventually rusted/broke.  While that watch still keeps perfect time (!), it was time for replacement.  I searched through Amazon and found nearly the identical watch (original had titanium case).  I substituted a comfortable leather watchband for the metal band supplied, and have worn my new watch every day since. The design has been improved -- analog hands are now moved by a tiny internal motor (!) activated by pushing the watchstem "button" rather than the traditional rotating/winding the button.  Strongly recommended for dual time-zone use.