| Size | ★★★★ |
| Weight | ★★★ |
| Functions | ★★★★ |
| Materials | ★★★ |
| Price | ★★★★★ |
GR-B100 Model Range *may be updated
*Want to be the first to know about new G-Shock Updates? Here we store all recent Monthly G-Shock Updates →
Quick Content Guide
- GR-B100 Model Range *in different colors and bands
- Japanese Unique Features in GR-B100 *the most distinctive features in details
- General information about the watch *year of first release, model range etc.
- Official GR-B100 Video *only from Casio Company
- G-Shock GR-B100 on the wrist! *only images and only on the wrist
- GR-B100 Usage Patterns *what the watch is usually meant for
- G-Shock GR-B100 Watch Review *our detailed review of the watch
- Feedback from Users and Experts *anonymous from different sources
- The most distinctive specs *from our Editorial point of view
- Other G-Shock GR Watches *similar by price and functions but different by cases
- Official GR-B100 Specs *all details and for base version GR-B100-1A2
- GR-B100 Comparison Table *with similar G-Shock Watches
- Full Photo Gallery *various images
- Recent News about GR-B100 *the latest breaking news and videos
About the Watch in Short. Representative of the latest generation G-Shock Gravitymaster with Bluetooth and route logging. Thanks to the large hands and the improved STN electronic panel, the information on the dial is read even in poor visibility conditions. The design of the digital window resembles a glass cockpit, which provides clear visibility around the aircraft. 6 separate buttons are responsible for managing the watch’s functions, but don’t worry about the complexity of the settings – the Bluetooth connection to the smartphone removes all issues, and you can now control the watch directly from the smartphone’s screen. During the flight, the watch records the intermediate points of the route, which can then be viewed in the form of a map in the G-Shock Connect application. The modified alarm timer is set to a specific date, month and even year, and 30 minutes before the event occurs, a countdown is activated with the remaining time displayed on the display. The GR-B100 has a solar battery that does not require replacement and is charged by sunlight and daylight.
G-SHOCK GRAVITYMASTER Evolution Timeline
July, 2020
GR-B200
300$ on Amazon →
★★★★★
Quad Sensor & Flight Mission Functions
Its structure combines a carbon fiber-reinforced resin case with a Carbon Core Guard that protects the module, offering shock resistance and fortifying the watch against vibrations.
More about the Watch →
February, 2019
GWR-B1000
800$ on Amazon →
★★★★★
The next stage of toughness based on carbon materials
Featuring strong, lightweight carbon materials and a newly developed carbon monocoque case, this lightest GRAVITYMASTER delivers the shock resistance of a pilot watch at a mere 72 grams.
More about the Watch →
March, 2018
GR-B100
400$ on Amazon →
★★★★
Accuracy and Functions required during Flight
More about the Watch →
May, 2017
GPW-2000
World’s 1st*1 watch with 3 time correction systems
Pursuing a precision time display capability that is indispensable for aviation missions, this model combines GPS hybrid radio-controlled, solar-powered timekeeping*2 with a Bluetooth® communication function in a 3-way time correction system.
Enjoy Japanese Unique Features in GR-B100!
COUNTDOWN ALARMS
Five alarms, each including year, month, day and time settings and equipped to display the remaining days and hours digitally, are available to help pilots manage their flight schedules over several days. The small hand & LCD begin moving 30 minutes before each scheduled alarm time.
FULL-DOT STN DISPLAY.
A large 7 x 33 dot LCD enables clear, high-resolution digital display of the alarm and 1/1000-second stopwatch functions.
SIX-KEY OPERATION.
The addition to the five side buttons of a dedicated front button for dial light control creates a six-key configuration for enhanced multi-function operability.
LAYER-COLOR MOLDED BAND.
Two-color moulding is employed to present different colors on the front and back of the band.
AVIATION DESIGN.
The large hands and index provide the easy visibility a pilot’s watch requires.
SUPER ILLUMINATOR.
A pair of high-brightness LED lights illuminate the dial and LCD automatically with a tilt of the wrist in the dark.
General Information
| Price | $225 *average Amazon Price, we may earn commission from purchases |
| Year of first Release | 2018 |
| Module Number | 5536 / Manual |
| Model Range | GRAVITYMASTER (Developed in response to pilots’ needs, these tough watches offer improved accuracy, strength and practicality. Famous for unique and beautiful aviation design (usually analog) and advanced technologies.) |
| Battery Type | Solar (G-Shock Batteries) Buy Battery on Amazon → |
| Other Divisions the GR-B100 belongs to: *you may find all watches of the division by clicking on the link | G-Shock Ana-Digi G-Shock Bluetooth G-Shock Solar |
Official GR-B100 Video
G-Shock GR-B100 on the wrist!
GR-B100 Usage Patterns *what the watch is usually meant for
Enjoy our G-Shock GR-B100 Watch Review
This function’s purpose is to allow you to mark spots on the map, and in time this spots will help you to build a so-called movement route. In order to do this, you need to hold down the lower right button on the watch for half a second, and your location and time [from the phone, of course] will be spotted on the map. Once you arrive at the airport number 2, you press this button one more time and the new point will also be reflected in the application. As a result, you will get sort of a 3D map of your route through the planet. Read Full Review →
Feedback from Users *accumulated information from our own comments and emails, forum threads, socials, reviews, etc.
PROs
+ bluetooth
+ easy setup
+ easy to read face and display
+ lighting feature
+ tough solar powered
+ I use this watch on the flight deck and it matches the FMS times in every way, perfect watch to use.
+ a fantastic looking G-Shock and very legible
CONs
– “phone finder” feature sometimes terrible
– it would be a perfect aviation watch if it has triple sensors! The analog hands are important since the low temperature will white out the LCD
– you have to have your location on while using the app to connect to your phone which isn’t a plus
– Casio collects info from your phone, how you use the app & etc.
Feedback from Experts *based on comparison info with similar watches by price, model range, etc.
PROs
+ hourly Time Signal
+ affordable price
+ perfect accuracy. Bluetooth (via phone app)
+ smart feature via G-Shock Connected App
+ 5 alarms
+ 39 time zones
+ solar powered
+ 1/1000-second stopwatch
+ Auto-Back Light
+ multi Day Format
+ multi Language Day
CONs
– mineral Glass
– no Carbon (Carbon Core Guard) material
– no Alpha Gel / Vibration Resistance
– no Altimeter and Barometer
– no Compass
– no Step Tracker
– no Sunrise Sunset
– no Tough MVT
What we like in GR-B100 *comments by experts with 10 years experience in writing about Casio watches
— 200-meter water resistance (good for swimming but not for deep diving)
— Full-dot STN display (A large 7 x 33 dot LCD enables clear, high-resolution digital display of the alarm and 1/1000-second stopwatch functions)
— G-SHOCK Connected App (you may manage all watch settings through your phone)
— Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
— Mobile link (Wireless linking using Bluetooth(R)) (for time sync with your phone data)
— Flight Log (records location and time data during the flight. It’s addictive watching the 3D map display in the app)
Other G-Shock GR Watches *similar by price and functions but different by cases
Official Casio Description. G-SHOCK GRAVITYMASTER has long been the timepiece series at the forefront tough timekeeping. Now these new aviation watch models take this one step further with designs that provide the accuracy and function required during flight.
Large hour and minute hands and hour markers improve readability. These models let you schedule up to five flight times, with a seconds unit countdown until the next flight time.
The large LCD is designed in the image of a glass cockpit of a passenger aircraft, which provides pilots with a clear view of information. Five side buttons and a front light button help to simplify operation by providing more direct access to functions.
These models are the first of the G-SHOCK lineup to feature a large 7 × 33-dot LCD, and an ion plated multi-faceted metal bezel, creating the image of a state-of-the-art aircraft. A bi-color molded band adds a definite touch of fashionable elegance.
Official GR-B100 Specs / Features *for base version GR-B100-1A2
- Case / bezel material: Resin / Stainless steel
- Resin Band
- Neobrite
- Shock Resistant
- Mineral Glass
- 200-meter water resistance
- Solar powered
- 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) - Mobile link (Wireless linking using Bluetooth®)
- World time
39 time zones* (39 cities + coordinated universal time), one-touch UTC time zone, 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 and 1-hour increments) - 5 multi-function alarms (with countdown, 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), 1 dial (countdown indicator)
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)
19 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) - Size of case : 62.5×53.8×17.3mm
- Total weight : 87g
GR-B100 Comparison Table with similar G-Shock Watches
GR-B100 | |||
Price (Amazon) | |||
Year of first Release | 2019 | 2018 | |
Accuracy | Bluetooth (via phone app) | Radio-controlled (via atomic watch signals), Bluetooth (via phone app) | Bluetooth (via phone app) |
SmartWatch Features | G-Shock Connected App (simplifies certain watch operations by letting you perform them on your phone screen) | G-Shock Connected App (simplifies certain watch operations by letting you perform them on your phone screen) | G-Shock Connected App (simplifies certain watch operations by letting you perform them on your phone screen) |
Light | Neobrite (hands and hour markers) Double LED light | Neobrite (hands and hour markers) and LED light (Super Illuminator) | Neobrite (hands and hour markers) Double LED light |
Alarm | 5 daily alarms | Daily alarm | 5 alarms with date setting, hourly time |
Timer | Measuring unit: 1 second | Measuring unit: 1 second | Measuring unit: 1/10 second |
Stopwatch | 1/100-second stopwatch | 1-second stopwatch | 1/1000-second stopwatch |
Hourly Time Signal | Yes | No | Yes |
World Time | 38 time zones (38 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping | 27 time zones, Home city time swapping, auto summer time (DST) switching | 39 time zones* (39 cities + coordinated universal time), one-touch UTC time zone, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping |
Alpha Gel / | No | Yes | No |
Altimeter | Yes | No | No |
Auto-Back Light | Yes | No | Yes |
Barometer | Yes | No | No |
Compass | Yes | No | No |
Multi Day Format | No | No | Yes |
Multi Language Day | No | No | Yes |
Step Tracker | Yes | No | No |
Sunrise Sunset | Yes | No | No |
Tough MVT | No | Yes | No |
Case / bezel material | Carbon (Carbon Core Guard) | Carbon (Monocoque Case) | Resin / Stainless steel |
Glass | Mineral (Spherical Glass) | Sapphire Glass with non-reflective coating | Mineral Glass |
Battery | 2 years on CR2025 | Solar Powered (CTL920) | Solar powered (CTL1616) |
Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size | 63×54.1×18.3 | 50.1×46.4×16.9 | 62.5×53.8×17.3 |
Full features (if you want to know more) |
GR-B100 Replacement Band (Strap) *availability
We think it is very important (before buying a new watch) to know if there will be some choice as for replacement bands for GR-B100 (in future or even now). So we made a research and you shouldn’t worry about your future as the bands are available for buying.
starting from 60$ on eBay →
starting from 61$ on PacParts →
Recent News about GR-B100
- [G-Shock Old Alternative] GS-1000 started in 2005 and how’s it going now?
- G-Shock GR-B100 PROs & CONs from users and experts
- [G-Shock Comparison] GR-B200 VS GWR-B1000 VS GR-B100
- [G-Shock Review] GR-B100-1A3 – a new generation of aviators with route logging
You ask, we answer…
A large 7 x 33 dot LCD that enables clear, high-resolution digital display of the alarm and 1/1000-second stopwatch functions.
You may manage all watch settings through your phone.
CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power.
It records location and time data during the flight. It’s addictive watching the 3D map display in the app.
Not sure about GR-B100? There are more G-Shocks!
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