G-Shock G Steel GST-B400 Series Steel/Black GSTB400-1A

An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet. Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor . Your choice of four distinctive styles—the simplicity of a silver metal band and silver case; light silver case set against dark resin band; dial in dramatic red vapor deposition finish paired with a black ion-plated bezel; or dial in bold blue vapor deposition finish with black ion-plated bezel and band. With top bezels treated with five different finishes and middle bezels treated with four, these G-STEEL timepieces deliver exceptional metal textures from every angle. * Slimmest profile as of December 2020

Specifications

• Case size (L× W× H)

  
  
  46.6 × 49.6 × 12.9 mm

• Weight

  80 g

• Case and bezel material

  Resin / Stainless steel

• Band

  Resin Band

• Construction

  Shock Resistant
  Carbon Core Guard structure

• Water resistance

  200-meter water resistance

• Power supply and battery life

  Tough Solar (Solar powered)

• • Smartphone Link feature

    Mobile link (Wireless linking using Bluetooth®)

  • Apps

    CASIO WATCHES

  • App connectivity feature

    Auto time adjustment
    Easy watch setting
    Approximately 300 world time cities
    Time & place
    Reminder
    Phone finder

• • Glass

    Mineral Glass

  • Other

    Neobrite

• • 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

  • 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

  • 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)

  • Alarm/hourly time signal

    5 daily alarms
    Hourly time signal

  • 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)

  • Light color

    LED:White

  • Calendar

    Full auto-calendar (to year 2099)

  • Mute feature

    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 display/alert

    Battery level indicator

  • Run time

    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)

  • Accuracy

    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.)
    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