CASIO Men's G-Shock G-STEEL Carbon Tough Solar Watch GST-B400BB-1AER

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.

Resin Band
Shock Resistant
Carbon Core Guard structure
200-meter water resistance
Tough Solar (Solar powered)
Smartphone Link/App Connectivity Features
Mobile link (Wireless linking using Bluetooth®)

Mineral Glass
Black ion plated case
145 to 215 mm
Neobrite
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
Hourly time signal
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
Full auto-calendar (to year 2099)
Button operation tone on/off
Power Saving (display goes blank to save power when the watch is left in the dark)
Battery level indicator
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)
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.)
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

Movement Type Solar
Display Type Analogue-Digital
Calendar Day & Month
Features Stopwatch,Alarm,Timer,Time Zones,Light
Case Material Carbon fiber
Case Diameter (mm) 50
Case Thickness (mm) 13
Water Resistance Diver's 200mt
Crystal Mineral
Crown Pull & Push