Skip to search
Bestsellers     New arrivals     Limited Time Sale     Marketplace     67,050 Items
Japan : 4/25 20:27   EN
Europe, UK: Friday, May 1
USA: Wednesday, Apr 29
Australia: Thursday, Apr 30
Asia: Wednesday, Apr 29
UAE: Thursday, Apr 30

Order within 3 Hours 32 mins with Scheduled Delivery. If you place an order within this time, We will ship on Monday, Apr 27 2026. This delivery time is calculated by DHL & Fedex. You can check the exact delivery date on checkout page.

Buyer Protection

Full refund if not genuine. Full or partial refund, if the new item is not as described.

     Description (4,649 characters)

Set contents: body, box, instruction manual, warranty card attached to the instruction manual
Reinforced waterproof for everyday life: 20 BAR
Mobile link function that can be linked by Bluetooth communication with compatible smartphones
Impact resistant structure resistant to shock and vibration
Hand retract function that temporarily retracts the hour and minute hands that overlap on the liquid crystal display, making it easier to read the display data
Step count function with 3-axis accelerometer (with step count graph and target achievement rate graphic display)
Product introduction As a new product of the shock-resistant watch G-SHOCK, the "GMA-B800/GMD-B800", which is equipped with a step count function and a timer for interval measurement, is compact and easy to wear.



This model is a simple model with functions that are useful for daily health management and workouts.



It's compactly designed to fit a delicate arm with a genderless design.



In terms of functionality, the 3-axis acceleration sensor measures the number of steps taken per day and the pace of walking/running, and the number of steps is displayed on the clock.



When you connect to a smartphone via Bluetooth? communication, you can check your daily steps and calories burned using the dedicated app "G-SHOCK Connected"



In addition, the exercise intensity is discriminated in 5 levels from the number of steps measured with a watch and the walking/running pace, and the number of steps is displayed in a graph by exercise intensity, supporting daily health management



This is GMA-B800-9AJR




・Impact resistant structure
・20 ATM water resistant function
・Mobile link function (function interlocking by Bluetooth communication with compatible mobile phones)
・ Needle evacuation function (when the needle overlaps the liquid crystal display and is hard to see, the needle can be temporarily retracted from the liquid crystal display)
・Step measurement function ・Step display range: 0 to 999,999 steps ・Target achievement rate display (target step setting range: 1,000 to 50,000 steps, 1,000 steps unit) ・Step graph (steps per hour) 11 levels in 6 levels for 6 hours)・Step indicator display・Power saving function (when there is no movement for a certain period of time, the sensor automatically goes to sleep mode to save power)
・Dual time (with time swap function with home time)
・Stopwatch (1/100 seconds (less than 1 hour) / 1 second (1 hour or more), 24 hours total, with lap/split, up to 200 measurement data memory (measurement month/day, lap/split time), target (With time notification function, you can set up to 10 target notifications (target time))
-Timer: Timer for interval measurement that can set up to 5 times (set unit: 1 second, maximum set: 60 minutes, measurement in 1 second units, auto repeat, auto start)
・5 time alarms ・Time signal
・Fully automatic calendar
・12/24 hour display switching
・Operation sound ON/OFF switching function
・Double LED light: LED light for dial (auto light, super illuminator, afterglow function, afterglow time switching (1.5 seconds / 3 seconds)), LED backlight for LCD part (autolight, super illuminator, afterglow function) , Afterglow time switching (1.5 seconds / 3 seconds)) * If not linked with a smartphone, it will operate with normal quartz accuracy (average monthly difference ±
15 seconds)



* GMA-B800, GMD-B800, GMD-B800SC have obtained the certification of the Japanese Radio Law.



Brand introduction GSHOCK that has built a new concept of toughness on watches



Everything started with a passionate belief of the developers to make a clock that would not break even if dropped, a reckless challenge that overturns the common sense of the time



Over 200 prototypes were repeated, and after spending about two years, the completed structure was shock resistant.



It is the birth of technology that plays a central role in toughness.



Since then GSHOCK has continued to evolve



Structure, material, function



Pursue toughness from every aspect




Model Number: GMA-B800-9AJR
Release: 2020-07-01





Tags:

Casio  G-SHOCK(ジーショック)  G-Shock GBA800  Shock Resistant  Yellow  Silver  White  Casio G-Shock G-SQUAD  


Items Similar to 'G-SHOCK' !

Related products

Products Similar to 'CASIO'

New arrivals

HOT ITEMS

Bestseller
Panasonic Full-Frame Mirrorless Camera
Panasonic Full-Frame Mirrorless Camera "...
C$ 2,335
SEIKO SELECTION SBTR017 Men's
SEIKO SELECTION SBTR017 Men's

C$ 215
CASIO G-Shock Watch MIP LCD GW-BX5600-1A1JF Men's All Black (N)
CASIO G-Shock Watch MIP LCD GW-BX5600-1A...
C$ 427
Hasegawa 1/20 Sculpture Beauty's No.03 Sporty Unpainted Resin Kit SP521
Hasegawa 1/20 Sculpture Beauty's No....
C$ 39
New Model
CASIO EDIFICE Watch (Official Japanese Product) Collaboration Model Commemorating the 60th Anniversary of Honda's First F1 Victory  ECB-2300HR-1AJR Men's White
CASIO EDIFICE Watch (Official Japanese P...
C$ 1,287
Bestseller New Model
Shimano 26 Calcutta Conquest DC 200HG RIGHT Right-Handed (2026 Model) Baitcasting Reel /(5) [Σ01]
Shimano 26 Calcutta Conquest DC 200HG RI...
C$ 688
SEIKO Seiko Selection Nano Universe Collaboration Model Ladies Analog Quartz SSEH018 Ladies Black
SEIKO Seiko Selection Nano Universe Coll...
C$ 322
SEIKO Watch Seiko Selection nano universe collaboration SSEH026
SEIKO Watch Seiko Selection nano univers...
C$ 322
Mega House Portrait.Of.Pirates: Tashigi (Beauty version of swimsuit) Ex model PVC figure 1
Mega House Portrait.Of.Pirates: Tashigi ...

C$ 271
Bestseller
TAKARA TOMY BEYBLADE X UX-15 Shark Scale Deck Set
TAKARA TOMY BEYBLADE X UX-15 Shark Scale...
C$ 76
New Model
CASIO G-Shock Watch (Official Japanese Product) DW-5600MNC-8A2JF Men's Dark Gray
CASIO G-Shock Watch (Official Japanese P...
C$ 193
CASIO G-SHOCK FROGMAN radio wave solar GWF-1000-1JF men
CASIO G-SHOCK FROGMAN radio wave solar G...

C$ 659

Bestsellers

CASIO G-SHOCK Mid size model GMA-B800-9A... 4549526246005

Set contents: body, box, instruction manual, warranty card attached to the instruction manual
Reinforced waterproof for everyday life: 20 BAR
Mobile link function that can be linked by Bluetooth communication with compatible smartphones
Impact resistant structure resistant to shock and vibration
Hand retract function that temporarily retracts the hour and minute hands that overlap on the liquid crystal display, making it easier to read the display data
Step count function with 3-axis accelerometer (with step count graph and target achievement rate graphic display)
Product introduction As a new product of the shock-resistant watch G-SHOCK, the "GMA-B800/GMD-B800", which is equipped with a step count function and a timer for interval measurement, is compact and easy to wear.



This model is a simple model with functions that are useful for daily health management and workouts.



It's compactly designed to fit a delicate arm with a genderless design.



In terms of functionality, the 3-axis acceleration sensor measures the number of steps taken per day and the pace of walking/running, and the number of steps is displayed on the clock.



When you connect to a smartphone via Bluetooth? communication, you can check your daily steps and calories burned using the dedicated app "G-SHOCK Connected"



In addition, the exercise intensity is discriminated in 5 levels from the number of steps measured with a watch and the walking/running pace, and the number of steps is displayed in a graph by exercise intensity, supporting daily health management



This is GMA-B800-9AJR




・Impact resistant structure
・20 ATM water resistant function
・Mobile link function (function interlocking by Bluetooth communication with compatible mobile phones)
・ Needle evacuation function (when the needle overlaps the liquid crystal display and is hard to see, the needle can be temporarily retracted from the liquid crystal display)
・Step measurement function ・Step display range: 0 to 999,999 steps ・Target achievement rate display (target step setting range: 1,000 to 50,000 steps, 1,000 steps unit) ・Step graph (steps per hour) 11 levels in 6 levels for 6 hours)・Step indicator display・Power saving function (when there is no movement for a certain period of time, the sensor automatically goes to sleep mode to save power)
・Dual time (with time swap function with home time)
・Stopwatch (1/100 seconds (less than 1 hour) / 1 second (1 hour or more), 24 hours total, with lap/split, up to 200 measurement data memory (measurement month/day, lap/split time), target (With time notification function, you can set up to 10 target notifications (target time))
-Timer: Timer for interval measurement that can set up to 5 times (set unit: 1 second, maximum set: 60 minutes, measurement in 1 second units, auto repeat, auto start)
・5 time alarms ・Time signal
・Fully automatic calendar
・12/24 hour display switching
・Operation sound ON/OFF switching function
・Double LED light: LED light for dial (auto light, super illuminator, afterglow function, afterglow time switching (1.5 seconds / 3 seconds)), LED backlight for LCD part (autolight, super illuminator, afterglow function) , Afterglow time switching (1.5 seconds / 3 seconds)) * If not linked with a smartphone, it will operate with normal quartz accuracy (average monthly difference ±
15 seconds)



* GMA-B800, GMD-B800, GMD-B800SC have obtained the certification of the Japanese Radio Law.



Brand introduction GSHOCK that has built a new concept of toughness on watches



Everything started with a passionate belief of the developers to make a clock that would not break even if dropped, a reckless challenge that overturns the common sense of the time



Over 200 prototypes were repeated, and after spending about two years, the completed structure was shock resistant.



It is the birth of technology that plays a central role in toughness.



Since then GSHOCK has continued to evolve



Structure, material, function



Pursue toughness from every aspect




Model Number: GMA-B800-9AJR
Release: 2020-07-01



10627
4549526246005 In Stock