CASIO · JAPANESE-MARKET REFERENCE

GWG-B1000-1A4JF

Name: GWG-B1000-1A4JF
Brand: CASIO
SKU: GWG-B1000-1A4JF
Price: 137780.0 JPY
Availability: OutOfStock

¥137,780 JPY

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CASIO GWG-B1000-1A4JF is a Japanese-market reference. The bio-based resin / stainless steel case and bezel are paired with a bio-based resin band. Tough Solar (solar charging system). Features include shock resistance, Carbon Core Guard construction and Bluetooth smartphone connectivity. Listed water resistance: 20-bar water resistance.

Reference: GWG-B1000-1A4JF
Case (H × W × D): 58.7 × 52.1 × 16.2 mm
Weight: 114 g
Listed water resistance: 20-bar water resistance

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Before & after your purchase

Read our shipping and return information before ordering. Model-specific warranty and repair guidance is available below.

Buying from Japan Size & function guide

Setup & support

Model reference: GWG-B1000-1A4JF

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Warranty & service

Local warranty service outside Japan is not guaranteed. Read our return and repair policy and ask about your exact reference before ordering.

Bracelet fit & adjustments

Check the case dimensions and band details in the specifications. Ask us about fit, included links and adjustment options before placing an order.

Packaging & included items

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Product details

Model: GWG-B1000-1A4JF
JAN / EAN: 4549526361890
Intended use: Wristwatch
Band material: Bio-based resin band
Crystal material: Sapphire crystal with anti-reflective coating on the inner surface
Weight: 114 g
Case size (L × W × H): 58.7 × 52.1 × 16.2 mm
Price: ¥137,780 JPY
Country of origin: JP

Specifications

Release date	October 2023
Japan MSRP	Japan MSRP: ¥132,000 (including Japanese tax)
Case size (H × W × D)	58.7 × 52.1 × 16.2 mm
Weight	114 g
Case and bezel material	Bio-based resin / stainless steel
Band	Bio-based resin band
Construction	Shock resistant; vibration resistant; dust and mud resistant (Mud Resist); Carbon Core Guard structure
Water resistance	20-bar water resistance
Time adjustment	MULTIBAND 6 radio-controlled timekeeping: Japan, North America, Europe and China. Bluetooth: connects to a smartphone for automatic time adjustment
Power supply and battery life	Tough Solar (solar charging system)
Sensors	Compass: 16 directions, bearing angle (0–359°), 60-second continuous measurement, north indication, bearing memory, automatic level correction, magnetic declination correction, bearing calibration. Altimeter (relative altitude): −700 to 10,000 m in 1 m increments; up to 30 manual records (date, time, altitude); automatic maximum / minimum altitude and cumulative ascent / descent records; altitude trend graph; altitude differential indicator (±100 m / ±1000 m); measurement interval of 5 seconds / 2 minutes
1-second measurements during the first 3 minutes. Barometer: 260–1,100 hPa; 20-hour pressure trend graph; pressure differential indicator (±10 hPa); pressure change alerts using arrows and sound. The graph can be set to 2-minute measurement intervals, showing the past 20 minutes. Thermometer: −10 to 60°C in 0.1°C increments

Exterior details

Glass	Sapphire crystal with anti-reflective coating on the inner surface
Crown	Screw-lock crown
Compatible wrist size	145–215mm
Other features	Neobrite
Surface treatment	DLC coating (stainless steel parts); rose gold ion plating (bezel)

Watch functions

Mobile Link	Mobile Link: linked functions via Bluetooth communication with a compatible phone
App	Compatible with CASIO WATCHES
App features	Automatic time adjustment; easy watch settings; world time for approximately 300 cities; app information; Time & Place; mission log; location indicator; location memory; mode customization; automatic altitude correction; phone finder
World time	World time: 55 cities (38 time zones, daylight saving on/off) plus UTC (Coordinated Universal Time); home city / world time city swapping; direct UTC access
Stopwatch	Stopwatch: 1/100 second, 24-hour capacity, split time
Timer	Countdown timer: 1-minute setting increments, maximum 60 minutes, 1-second measurement
Alarm	5 daily alarms and hourly time signal
Light	Double LED light:
LED light for the dial: full auto light, Super Illuminator, afterglow, selectable illumination duration (1.5 seconds / 3 seconds);
LED backlight for the LCD: full auto light, Super Illuminator, afterglow, selectable illumination duration (1.5 seconds / 3 seconds)
Light color	LED: white
Calendar	Full auto-calendar
Power saving	Power saving: turns off the display and stops the hands after a period in the dark
Battery indicator and alerts	Battery level indicator
Operating time	Operating time from a full charge without further solar charging
With normal functions in use: approximately 6 months
In power-saving mode: approximately 24 months
Accuracy	Without radio reception or smartphone connection, the watch operates at normal quartz accuracy (±15 seconds per month).
Other features	12/24-hour format; hand shift (manual, or automatic during altitude, pressure and temperature measurements)
Button operation tone	Button operation tone on/off
Time calibration details	Home time cities (supported reception cities) / time calibration signals
Tokyo / Japan: JJY40 and JJY60
(Honolulu), (Anchorage), Los Angeles, Denver, Chicago, New York / United States: WWVB
London, Paris, Athens / United Kingdom: MSF; Germany: DCF77
Hong Kong / China: BPC
Cities in parentheses may receive signals under favorable conditions. Radio signal reception: automatic (up to 6 times a day, up to 5 for China) / manual
Japan: JJY, 40 kHz / 60 kHz (supports both Fukushima and Kyushu stations)
North America: WWVB, 60 kHz
Europe: MSF / DCF77, 60 kHz / 77.5 kHz
China: BPC, 68.5 kHz
When the home city supports reception, the watch receives the appropriate station for that city. The time difference is set according to the selected city.
Sunrise and sunset	Sunrise / sunset time display
Hand position correction	Automatic hand position correction
Sensor notes	The altimeter measures relative altitude by converting changes in air pressure. Weather-related pressure changes also change the altitude reading.
To measure air temperature, remove the watch from your wrist and avoid the effects of body heat, perspiration (water droplets), and direct sunlight.