The Casio G Shock MT G Silver and Black Watch is a high functioning Bluetooth watch. The bezel is a piece that is separate from the metal frame, which enables greater coloring versatility. The elegantly attractive mirror finish of the exterior metal parts gives these watches their distinctive look. The elegance of these models is further enhanced by high transparency sapphire crystals, as well as hour markers and inset dials that are precision engraved at the CASIO Yamagata Factory. Functionwise, these models maintain constant Bluetooth connection with a smartphone running the G SHOCK Connected app to obtain accurate time information from an on line time server for automatic time adjustment, even if you move between time zones. MULTIBAND 6 automatically adjusts time settings based on reception of one of six calibration signals around the globe when you are within the range of a signal, even if connection with a smartphone is not possible, for accurate timekeeping no matter where your travels take you.