From G-SHOCK, the watch brand that is constantly setting new standards for timekeeping toughness, come new G-STEEL models that boast a new shock resistant Carbon Core Guard structure. The case is made of fine resin that incorporates carbon fiber for light weight along with rigidity that is superior to that of resin. This material protects the internal module from shock-induced damage and deformation. The dual back cover protects the back surface against impact. The small case of the GST-B100 series base model provides a comfortable fit, even though the watch is equipped with a wide face.
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Bluetooth®
Link wirelessly to a smartphone using Bluetooth® SMART
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Solar Power
A solar cell provides power for operation
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LED Light (Super Illuminator, Double)
A light emitting diode is used to illuminate the face/display. Super Illuminator uses high-brightness LED for easier reading. Separate lighting for the digital and analog portions of the face for easy reading
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Dual Time
Simultaneous display of the current time in two different time zones
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Daily Alarm, Hourly Time Signal (5)
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
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Stopwatch (1/1000 100HR)
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
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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
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Full Auto-Calendar
Allowances are made automatically for months of different lengths, including leap year
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12/24-Hour Timekeeping
Times can be displayed in either 12-hour or 24-hour format
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Shock Resistant
Shock-resistant construction protects against impact and vibration
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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
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Mineral Glass
Hard glass resists scratching
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Band
Resin
| Case / bezel material: Carbon / Stainless steel |
| Resin Band |
| Mineral Glass |
| Neobrite |
| Shock Resistant |
| Carbon Core Guard structure |
| 200-meter water resistance |
| Double LED light |
| LED light for the face (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) |
| LED backlight for the digital display (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) |
| Tough Solar (Solar powered) |
| Mobile link (Wireless linking using Bluetooth®) |
| World time |
| 39 time zones* (39 cities + coordinated universal time), daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping |
| *May be updated when connected to a smartphone. |
| 1/1000-second stopwatch |
| Measuring capacity: |
| 00’00”000~59’59”999 (for the first 60 minutes) |
| 1:00’00”0~23:59’59”9 (after 60 minutes) |
| Measuring unit: |
| 1/1000 second (for the first 60 minutes) |
| 1/10 second (after 60 minutes) |
| Measuring modes: Elapsed time, split time |
| Countdown timer |
| Measuring unit: 1/10 second |
| Countdown range: 24 hours |
| Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments) |
| 5 multi-function alarms (with daily, 1 time, schedule) |
| Hourly time signal |
| Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.) |
| Battery level indicator |
| Full auto-calendar (to year 2099) |
| 12/24-hour format |
| Button operation tone on/off |
| Power Saving (display goes blank and hands stop to save power when the watch is left in the dark) |
| Regular timekeeping |
| Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), |
| Digital: Hour, minute, second, pm, month, date, day |
| Accuracy: ±15 seconds per month (with no mobile link function) |
| Approx. battery operating time: |
| 6 months on rechargeable battery (operation period with normal use without exposure to light after charge) |
| 20 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) |
| Size of case / Total weight |
| Size of case : 53.3×49.2×14.5mm |
| Total weight : 87g |
