CASIO EDIFICE - The EQB-510DC-1A can connect with iPhone or Glaxy to allow you to control the watch with smartphone app. It enables syncronizing the current time with smartphone, world time for
My New Toy – Casio Edifice EQB-900DB-2A Solar Powered with Bluetooth Smartphone Link, Alarm, LED Light and Best Of All Dual Dial World Time | GenX GenY GenZ