Features: resin case resin strap quartz movement mineral crystal black dial analog digital display shock resistant carbon core guard structure mobile link (wireless linking using bluetooth) auto time adjustment approximately 300 world time cities phone finder neobrite world time 1/100 second stopwatch countdown timer 5 daily alarms hourly time signal double led light full auto calendar button operation tone on/off 12/24 hours display luminous hands day and date display screwed case back buckle clasp 200m water resistance approximate case diameter: 46mm approximate case thickness: 13.8mm