From G-SHOCK, the watch that always strives for toughness, the first G-STEEL lineup models to offer chronograph performance in analog format.
Thought all the dials of these models 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.
These watches are equipped with Bluetooth® that lets them connect with a 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.

These new models come with metal parts and buttons, and offer a choice between either green ord gold accent coloring on the iconic disk dial at 9 o’clock. GSTB100 comes with Tough Solar technology and Bluetooth connectivity to access an internet time server for accurate timekeeping.

 

  • Smartphone Link Functions
    (about 300 World Time cities, alarm, timer, hand alignment correction, home city time swapping, phone finder)
  • Battery level indicator
  • New layer guard structure
  • Tough Solar
  • Dual dial world time (Simultaneous indication of current times in two locations.)
  • High-brightness LED light

Features

Rotary Disc

A rotary disc inspired by jet engine blades is mounted at 9 o’clock. The battery level and remaining time on the timer are indicated by a red marker that is visible through the clearance of the blades.

Layer Guard Structure

The bezel structure combines two layers, a metal layer and a resin layer. Six front screws attach it firmly to the forged stainless-steel case, adding a tough finish to the powerful exterior.

Tough Solar

Tough Solar converts sunlight or artificial light to ample power to assure stable operation of multiple functions. The system supports a solar-powered Smartphone Link function with a heavy load capability.

  • *1 TORAYCA®: High-performance carbon fiber material by Toray Industries is used in a wide range of applications, including: aerospace, high-pressure vessels, wind power generation, automobiles, bicycles, golf club shafts, fishing rods, and more.
  • *2 NANOALLOY®: Original Toray Industries nanometer structure control technology makes it possible to combine multiple polymers on a nano-metric scale (one billionth of a meter) for performance that is far superior to previous types of materials. This polymeric material enables high performance and high function that was previously not possible with standard micron order (one millionth of a meter) alloys.

G-SHOCK Connected

Smartphone App

The exact time is set automatically by smartphone four times a day. The time in any of 300 cities worldwide can also be displayed promptly with a simple operation on a special smartphone application.

Automatic time correction

The watch is connected to an Internet-based time server automatically and the time corrected four times a day. When crossing between time zones, it switches to local time immediately with the touch of a button.

Data updating system

Regulations governing time around the world, including changes in time zones and Daylight Saving Time starting/ending dates of are entered into the watch’s internal data via the app. The correct time is always displayed based on the latest time information.

300-city World Time

The time in any city selected from a world map or city list is displayed in an inset dial on the watch face with a simple touch of the smartphone screen.

Home Time / World Time display switching

Just the touch of a button on the app switches the times displayed on the main dial and inset dial. This function comes in handy when traveling internationally, for example.

Battery level indicator

The battery charge level can be checked on the app. Wearing or storing the watch in an environment that enables solar recharging helps to keep the battery charged.

Phone Finder

Operating a button on the watch sounds an alert on a misplaced smartphone.
Even when set to the silent mode, the phone sounds out clearly to announce its location.

Supported Phone Models (As of August 2017)

  • iOS: iOS 10 or later
  • Android: Android 6.0 or later

* Bluetooth installed smartphone only.


* 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.

  • LED Light (Super Illuminator)

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

  • Dual Time

    Simultaneous display of the current time in two different time zones

  • 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

  • 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

  • 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

  • Beeper Alarm

    Beeper tone alarm sounds at the time you set

  • Full Auto-Calendar

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

  • 12/24-Hour Timekeeping

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

  • Battery Level Indicator

    Indicator shows the current battery level

  • 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

  • Mineral Glass

    Hard glass resists scratching

  • Case

    Gold IP Bezel, Green Resin SS Case.

  • Crown

    Screw-Lock

  • Band

    Soft Urethane Resin

  • Case / bezel material: Resin / Gold IP Stainless steel
  • Soft Urethane Resin Band
  • Gold IP Bezel
  • Mineral Glass
  • Neobrite
  • Shock Resistant
  • Screw Lock Crown
  • 200-meter water resistance
  • Tough Solar (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)
  • 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: 58.1×53.8×14.1mm
  • Total weight: 101g
  • Module: 5513
  • UPC: 889232326856

Smartphone App

Get It On Google Play

Smartphone App

Download on the App Store

Operation Guide (HTML)

Module No. 5513

Operation Guide (PDF)
Quick Reference (PDF)
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