Introducing the GST-B600 ƒ?? a more compact G-SHOCK and the slimmest metal-resin G-STEEL to date. The GST-B600, with its fusion of metal and resin components, comes in at a super-slim 11.3 mm with the popular small case measuring just 42 mm in diameter, all the while managing to maintain the two-part metal bezel construction that G-STEEL is known for. Case / bezel material: Resin / Stainless steel Resin Band Shock Resistant¶ÿ Neobrite¶ÿ Mineral Glass Black ion plated bezel 200-meter water 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 Mobile link (Wireless linking using Bluetooth¶©)¶ÿ World time¶ÿ 38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping 1-second stopwatch Measuring capacity: 59'59 Measuring unit: 1 second Measuring modes: Elapsed time, lap time, 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 Hourly time signal Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) Low battery alert Full auto-calendar (to year 2099)¶ÿ 12/24-hour format¶ÿ Button operation tone 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 (hands move every 20 seconds)) Digital: Hour, minute, second, pm, month, date, day Date/month display swapping Accuracy: ¶ñ15 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) Size of case : 41.4 Ç? 42.3 Ç? 11.4 mm Total weight : 60 g