GSTB300SD-1A
From G-SHOCK, the watch brand that is constantly setting new standards for timekeeping toughness, come new rugged style G-STEEL models that feature Carbon Core Guard structures.
Technology
Carbon Core Guard
A new Carbon Core Guard structure for GST-B300, which protects the module with a carbon case. Highly durable carbon fiber-reinforced resin is added not only to the center case, but also to the front and side button guards, providing even stronger resistance to shocks from above or below, or from any side.
Tough Solar
CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.
Design
Bezel & Front Button
The battery indicator at the 6 o’clock position, designed to evoke a brake disk, shows the remaining battery power by an arrow pointer and a curved red bar, providing visually interesting ways to check the battery.
Resin Band
Interchangeable with a resin band.
* Updating of internal data according to the latest time zone/ daylight saving time information
* The Bluetooth® wordmark and logo are registered trademarks of Bluetooth SIG, Inc. and any use of these marks by Casio Computer Co., Ltd. is under license.
* Apple, Apple logo and iPhone are trademark of Apple Inc. registered in the United States and other countries. App Store is a service mark of Apple Inc.
* IOS is a trademark or registered trademark of Cisco Systems, Inc. registered in the U.S.
* Google Play and the Google Play logo are trademarks of Google Inc.
* All other company and product names are trademarks or registered trademarks of their respective owners.
* List of Countries and Geographic Areas where Product Conforms to Radio Laws or Has Been Approved.
SMARTPHONE LINK
Links with a smartphone for more accurate timekeeping and access to a host of mobile link functions.
SHOCK RESISTANT
Shock-resistant construction protects against impact and vibration.
TOUGH SOLAR
CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.
G-SHOCK CONNECTED APP
Connection with a phone requires installation of the G-SHOCK CONNECTED App on the phone.
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LED Light (Super Illuminator)
A light emitting diode is used to illuminate the face/display. Super Illuminator uses high-brightness LED for easier 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
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 (1/100 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
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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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Beeper Alarm
Beeper tone alarm sounds at the time you set
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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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Battery Level Indicator
Indicator shows the current battery level
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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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Crown
Screw-Lock
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Band
Stainless Steel interchangeable
- Case / bezel material: Resin / Stainless steel
- Stainless Steel Band
- Solid Band
- One-touch 3-fold Clasp
- 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)
- battery operating time:
6 months on rechargeable battery (operation period with normal use without exposure to light after charge)
19 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) - Module: 5631
- Size of case: 51×50×15.5mm
- Total weight: 185g
- UPC: 889232272221
