CASIO · JAPANESE-MARKET REFERENCE

GST-B400D-1AJF

Name: GST-B400D-1AJF
Brand: CASIO
SKU: GST-B400D-1AJF
Price: 63420.0 JPY
Availability: OutOfStock

¥63,420 JPY

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Taxes included. Shipping calculated at checkout.

CASIO GST-B400D-1AJF is a Japanese-market reference. The resin / stainless steel case and bezel are paired with a solid stainless steel 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: GST-B400D-1AJF
Case (H × W × D): 46.6 × 49.6 × 12.9 mm
Weight: 160 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: GST-B400D-1AJF

Search the official manual using this model or the module number on your watch.

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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

Included items can vary by reference. Contact us with the model number to confirm the box, documents and accessories.

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Product details

Model: GST-B400D-1AJF
JAN / EAN: 4549526303654
Intended use: Wristwatch
Band material: Solid stainless steel band; one-touch three-fold clasp
Crystal material: Mineral glass
Weight: 160 g
Case size (L × W × H): 46.6 × 49.6 × 12.9 mm
Price: ¥63,420 JPY
Country of origin: JP

Specifications

Release date	May 2021
Japan MSRP	Japan MSRP: ¥60,500 (including Japanese tax)
Case size (H × W × D)	46.6 × 49.6 × 12.9 mm
Weight	160 g
Case and bezel material	Resin / stainless steel
Band	Solid stainless steel band; one-touch three-fold clasp
Construction	Shock resistant; Carbon Core Guard structure
Water resistance	20-bar water resistance
Time adjustment	Bluetooth: connects to a smartphone for automatic time adjustment
Power supply and battery life	Tough Solar (solar charging system)

Exterior details

Glass	Mineral glass
Compatible wrist size	150–205mm
Other features	Neobrite

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; Time & Place; reminders; phone finder
World time	World time: 38 cities (38 time zones, automatic daylight saving adjustment) plus UTC (Coordinated Universal Time); home city / world time city swapping
Stopwatch	Stopwatch: 1/100 second for the first hour, 1 second thereafter; 24-hour capacity; lap / split time
Timer	Countdown timer: 1-second 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: Super Illuminator, afterglow, selectable illumination duration (1.5 seconds / 3 seconds);
LED backlight for the LCD: 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 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 7 months
In power-saving mode: approximately 18 months
Accuracy	Without smartphone connection, the watch operates at normal quartz accuracy (±15 seconds per month).
Other features	Hand shift (temporarily moves the hands away from the LCD for easier viewing); 12/24-hour format; date display (month/day order switchable); day display in 6 languages (English, Spanish, French, German, Italian, Russian)
Button operation tone	Button operation tone on/off