Casio Men's Edifice Connected Quartz Watch with Stainless-Steel Strap, Silver, 12 (Model: EQB-600D-1A2CF)

The watch is reset regularly 4 times a day by the smartphone to show both home time and world time correctly. You can also reset the watch manually with just a push of a button when crossing between time zones. The precise time in the current location is displayed instantly with DST (daylight saving time) taken into account. Accurate time information (UTC) is acquired by a smartphone from a time server on the Internet. The smartphone then analyzes this time data and its own current positioning data regarding the time zone and DST (daylight saving time) status of the current location and resets the watch to the correct time automatically. Since Wi-Fi communication is also possible, the smartphone can also acquire time information in indoor environments such as airports or subways. The smartphone app can be used to conduct world time city selection. After a city is selected by touch from a world map or a city list containing over 300 cities, the time in the selected city is displayed on an inset dial with DST (daylight saving time) taken into account. Home Time is displayed on the main dial and World Time on the inset dial at 8 oclock in a 12-hour format. The time zone and AM/PM status of the selected city are also displayed, moreover, on the 3D globe dial at 3 oclock. Switching between the two city time displays can be conducted with button operation or using the app. The movement of the large 3D globe dial is driven by a high-torque dual coil motor. While operating the dial to mirror the earths rotation, it realizes smooth, expressive movements when changing world time city settings. Tough Solar converts light to electric power to support stable operation of multiple functions. Adoption of a shadow-dispersing solar panel with excellent power-generation efficiency enables solar-powered operation of various functions through smartphone linkage. Day and night are displayed for the selected World Time city. When it is night time in the regions in the upper half of the globe dial, it is daytime in the regions in the lower half.