ÇïÓ? Revel in eclectic sophistication with the G-STEEL fusion of metal and resin components in a popular all-black G-SHOCK. ÇïÓ? Tough construction meets stylish design in a black ion-plated metal bezel set against a base of jet black. With its slim combination module and Carbon Core Guard structure, the black-on-black take of the GST-B400 is a cool fashion statement ready for whatever you are. ÇïÓ? Caseƒ?ª?/ƒ?ª?bezelƒ?ª?material:ƒ?ª?Resin / Stainless steel Resin Band Shockƒ?ª?Resistant Neobrite Mineral Glass Black ion plated case Carbonƒ?ª?Coreƒ?ª?Guardƒ?ª?structure 200-meterƒ?ª?waterƒ?ª?resistance Tough Solar (Solar powered) Double LED light LED 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) LED:White Mobileƒ?ª?linkƒ?ª?(Wirelessƒ?ª?linkingƒ?ª?usingƒ?ª?BluetoothÇïƒ??) World time 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping 1/100-second stopwatch Measuring 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 Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments) 5 daily alarms Hourlyƒ?ª?timeƒ?ª?signal Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) Batteryƒ?ª?levelƒ?ª?indicator Fullƒ?ª?auto-calendarƒ?ª?(toƒ?ª?yearƒ?ª?2099) 12/24-hourƒ?ª?format Buttonƒ?ª?operationƒ?ª?toneƒ?ª?on/off Power Saving (display goes blank to save power when the watch is left in the dark) Date/month display swapping Day 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 Accuracy: Çï¶Ï15 seconds per month (with no mobile link function) 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) Sizeƒ?ª?ofƒ?ª?caseƒ?ª?:ƒ?ª?46.6 _ 49.6 _ 12.9 mm Totalƒ?ª?weightƒ?ª?:ƒ?ª?80 g