G-Shock collection. White plastic resin case with stainless steel case-back. White dial with auto LED light and Afterglow Shock resistant, magnetic resistant, and water resistant to 200m. World time, 29 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping. 100h digital chronograph measures in 1/1000sec increments. Measures elapsed time, lap time, and split time. 24h countdown timer counts in as small as 1sec increments. Auto-repeat function available. 4 one-time alarms and 1 snooze alarm. Hourly time signal. Full auto-calendar to year 2099. 12/24-hour format. Precise Quartz movement, accurate to +/-15 seconds per month. Case measures 51mm diameter by 17mm thick.