Case / bezel material: Stainless steel / Resin Resin Band Mineral Glass Shock Resistant Screw Lock Back ISO 200 meters Water Resistance Electro-luminescent backlight Full auto EL light, afterglow Solar powered World time 31 time zones (48 cities coordinated universal time), daylight saving on/off Moon data (moon age of the specific date, moon phase graph) Tide graph (tide level for specific date and time) Dive time and surface interval measurement function Dive time: 1 second increments, up to 23:59'59 Surface interval: 1 minute increments, up to 47:59'59 Memory capacity: One set of data (dive start date and time, dive time) 1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 5 daily alarms (with 1 snooze alarm) Hourly time signal Battery power indicator Power Saving (display goes blank to save power when the watch is left in the dark) Full auto-calendar (to year 2099) 12/24-hour format Button operation tone on/off Regular timekeeping: Hour, minute, second, pm, month, date, day Accuracy: �15 seconds per month Approx. battery operating time: 10 months on rechargeable battery (operation period with normal use without exposure to light after charge) 27 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Close Size of case / Total weight Size of case : 52�50.3�18mm Total weight : 112g