From the Solar G-Steel Black Out Collection. Revel in eclectic sophistication with the G-STEEL fusion of metal and resin components in a popular all-black G-SHOCK. 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.

Solar / quartz movement
Mineral glass
Stationary stainless steel bezel
Black analog and digital dial
Bar hour markers
Date and day displays
Resin / stainless steel case and strap
Peg and buckle closure
Limited one-year manufacturer's warranty
Made in Japan

FEATURES

Water resistant to 20 ATM
Model number: GSTB400BB-1A
Bluetooth
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
Hourly time signal
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)
Full auto-calendar (to year 2099)
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 level indicator
Approximate 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: 12/24-hour format
Date/month display swapping
Day display (days of the week selectable in six languages)
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)
Digital: Hour, minute, second, pm, month, date, day