The built-in Smartphone Link function uses (Bluetooth®) communications to connect to a smartphone and correct the time automatically four times a day. When crossing time zones, the watch displays the local time with one push of a button. It also uses information acquired via smartphone to update the global time difference and time zone information contained in the watch’s internal data.
Standard time radio waves are received by a tiny built-in antenna in Japan (Fukushima and Kyushu transmission stations), the United States, the UK, Germany and China, and the time is corrected automatically.
Casio's proprietary solar-charging system converts light to ample power to operate multiple power-hungry functions.