Drive system Quartz Material: Case Resin Material: belt Resin Windshield Inorganic glass Dial Color Black Belt color Green Size (length × width × thickness) About 55 × 49.7 × 16.6mm Weight About 78g Specification - Shock structure (resist shock) , inorganic glass , 20 ATM water resistant , multi-time: four different by registering the city, display switching and cities replacement is possible , World time: 48 cities (31 time zones, daylight saving time setting function ) UTC (Coordinated Universal Time display of the world at the time), time city home features replacement - Stopwatch (1/100 seconds, a total of 24 hours, split) Timer (set unit: 1 second, set up: 24 hours, 1/10 measured in seconds) - This five alarm (one-time alarm / Daily alarm switching function) Times - Full automatic calendar , 12/24 hour display switching * Beep ON / OFF switching function · LED backlight (auto light, Super Illuminator, afterglow function, afterglow time with switching (1.5 seconds / 3 seconds)) - Flash feature sound information (alarm / Hourly, timer time up, emitting sound information integration) and accuracy: ± 15 seconds per month difference