GSTB400GB-1A9 Revel in the eclectic G-STEEL combination of metal and resin components in an ever-popular colour scheme of black and gold. Tough construction meets stylish design with metal bezel ion-plated in gold set against a black base. This sophisticated fashion statement with a luxury feel and cool look takes you where you want to go. SIZE & MATERIALS Band Type: Resin Band Case and Bezel material: Resin Stainless Steel Size: 46.6 × 49.6 × 12.9 mm Colour: Black Compatible band size: 145 to 215mm Glass: Mineral Glass FEATURES Water resistance: 200 M Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®) World time: • 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 Timer: • 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) Light: 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) Calendar: Full auto-calendar (to year 2099) Energy saving feature: Power Saving (Display goes blank to save power when the watch is left in the dark) Stopwatch: • 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 Alarm/hourly time signal: 5 daily alarms Hourly Time Signal Mute feature: Button operation tone on/off Battery display/alert Battery Level Indicator