Construction:Shock Resistant Time adjustment:Bluetooth: Connects to a smartphone and automatically adjusts the time Power supply and battery life:Tough Solar (Solar powered) Smartphone Link feature:Mobile link (Wireless linking using Bluetooth) App connectivity feature:Auto time adjustmentEasy watch settingApproximately 300 world time citiesTimeandamp;amp; placeReminderPhone finder World time:World time 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping Stopwatch:1/100-second stopwatchMeasuring capacity: 00'00''00~59­'59''99 (for the first 60 minutes)1:00'00~23:59'59 (after 60 minutes)Measuring unit: 1/100 second (for the first 60 minutes)1 second (after 60 minutes)Measuring modes: Elapsed time, lap/split time Timer:Countdown timerMeasuring unit: 1 secondCountdown range: 60 minutesCountdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments) Alarm/hourly time signal:5 daily alarmsHourly time signal Light:Double LED lightLED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Calendar:Full auto-calendar (to year 2099) Mute feature:Button operation tone on/off Energy saving feature:Power Saving (display goes blank to save power when the watch is left in the dark) Battery display/alert:Battery level indicator Run time:Approx. battery operating time:7 months on rechargeable battery (operation period with normal use without exposure to light after charge)18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy:±15 seconds per month (with no mobile link function) Other features:Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)12/24-hour formatDate/month display swappingDay display (days of the week selectable in six languages)Regular timekeeping:Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)Digital: Hour, minute, second, pm, month, date, day Strap Construction:Shock Resistant Time adjustment:Bluetooth: Connects to a smartphone and automatically adjusts the time Power supply and battery life:Tough Solar (Solar powered) Smartphone Link feature:Mobile link (Wireless linking using Bluetooth) App connectivity feature:Auto time adjustmentEasy watch settingApproximately 300 world time citiesTimeandamp;amp; placeReminderPhone finder World time:World time 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping Stopwatch:1/100-second stopwatchMeasuring capacity: 00'00''00~59­'59''99 (for the first 60 minutes)1:00'00~23:59'59 (after 60 minutes)Measuring unit: 1/100 second (for the first 60 minutes)1 second (after 60 minutes)Measuring modes: Elapsed time, lap/split time Timer:Countdown timerMeasuring unit: 1 secondCountdown range: 60 minutesCountdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments) Alarm/hourly time signal:5 daily alarmsHourly time signal Light:Double LED lightLED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Calendar:Full auto-calendar (to year 2099) Mute feature:Button operation tone on/off Energy saving feature:Power Saving (display goes blank to save power when the watch is left in the dark) Battery display/alert:Battery level indicator Run time:Approx. battery operating time:7 months on rechargeable battery (operation period with normal use without exposure to light after charge)18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy:±15 seconds per month (with no mobile link function) Other features:Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)12/24-hour formatDate/month display swappingDay display (days of the week selectable in six languages)Regular timekeeping:Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)Digital: Hour, minute, second, pm, month, date, day