G-Shock Black G-Steel BLE Tough-Solar Watch GST-B100B-1A4CR

Item Code: GST-B100B-1A4CR
Out of Stock
loading icon
Email me when in stock
See More
  • Case Size: 58.1mm × 53.8mm × 14.1mm
  • Total Weight: 101g
  • 200 Meter Water Resistant
  • Solar Powered
  • iPhone & Android Connectivity
  • Detail
    Reviews / Q&A

    The G-Shock G-Steel BLE Tough-Solar Smartwatch offers chronograph performance in analog format. Though the dials are analog, they still boast G-SHOCK level shock resistance.

    The dial at 9 o'clock has a multi-functional rotating disk that is cut to resemble the thick blades of a jet engine. Rotation of the blades reveals red coloring behind the disk, and this change in color is used to indicate the battery level and the alarm on/off setting. The blades also rotate in the Timekeeping and Stopwatch modes to with the passage of time.

    A new layer guard structure houses resin cushioning parts inside the case, for a more elegant design and a better fit to the wrist. High density mounting technology makes it possible to create a module that is smaller and thinner, which also contributes to a better fit.

    This watch is equipped with Bluetooth that lets it connect with your smartphone at the press of a button, and acquire time information from an internet time server. The result is accurate timekeeping no matter where in the world you happen to be.

    Other functions include Tough Solar in combination with CASIO original power saving technology for a stable supply of power, high brightness LED light illumination, and dual dial World Time.


    Link wirelessly to a smartphone using Bluetooth SMART

    Dual Time

    Simultaneous display of the current time in two different time zones

    Timer (24H)

    Counts down from a start time specified by you. The value indicates the number of timers available, while the time figure indicates the maximum starting time. "REPEAT" indicates Auto Repeat, which automatically restarts timing at the end of each countdown

    12/24-Hour Timekeeping

    Times can be displayed in either 12-hour or 24-hour format

    Water Resistant (20 BAR)

    The "BAR" value indicates the number of atmospheres to which water resistance is ensured. 20 BAR means water resistance to 20 atmospheres. Watches marked "200m" have the same water resistance as 20 BAR watches



    Solar Power

    A solar cell provides power for operation

    Daily Alarm, Hourly Time Signal

    The daily alarm sounds each day at the time you set. The value indicates how many alarms are available. The hourly time signal causes the watch to beep every hour on the hour

    Beeper Alarm

    Beeper tone alarm sounds at the time you set

    Battery Level Indicator

    Indicator shows the current battery level

    Mineral Glass

    Hard glass resists scratching

    LED Light (Super Illuminator)

    A light emitting diode is used to illuminate the face/display. Super Illuminator uses high-brightness LED for easier reading

    Stopwatch (1/100 24HR)

    Accurate measurement of elapsed time with the touch of a button. The fraction indicates the unit of measurement, while the time figure indicates the maximum time measurement

    Full Auto-Calendar

    Allowances are made automatically for months of different lengths, including leap year

    Shock Resistant

    Shock-resistant construction protects against impact and vibration




    • Case/ bezel material: Stainless steel + Black IP
    • Resin Band
    • Mineral Glass
    • Neobrite
    • Shock Resistant
    • Screw Lock Crown
    • 200-meter water resistance
    • Solar powered
    • LED light (Super Illuminator)
    • Afterglow
    • Mobile link (Wireless linking using Bluetooth)
    • Dual time (Home city time swapping)
    • 1-second stopwatch:
      • Measuring capacity: 23:59'59
      • Measuring mode: split time
    • Countdown timer:
      • Measuring unit: 1 second
      • Countdown range: 24 hours
      • Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
    • Daily alarm
    • Battery level indicator
    • Power Saving (hands stop to save power when the watch is left in the dark)
    • Full auto-calendar (to year 2099)
    • Date display
    • Day indicator
    • Regular timekeeping
    • Analog: 3 hands (hour, minute (hand moves every 10 seconds), second),
    • 3 dials (dual time hour and minute, dual time 24-hour, day)
    • Accuracy: ±15 seconds per month (with no mobile link function)
    • Approx. battery operating time:
    • 5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
    • 24 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
    • Size of case: 58.1mm Ã- 53.8mm Ã- 14.1mm
    • Total weight: 101g
    WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

    Reviews / Q&A