- Case / bezel material: Resin / Stainless steel
- One-touch 3-fold Clasp
- Solid Band
- Stainless Steel Band
- Shock Resistant
- Mineral Glass
- Carbon Core Guard structure
- Black ion plated bezel
- 200-meter water resistance
- Tough Solar (Solar powered)
- Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds),afterglow)
- Mobile link (Wireless linking using Bluetooth??
- Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
- World time
38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping
- 1/100-second stopwatch
Measuring capacity: 00’00”00~59’59”99 (for the first 60 minutes)
1:00’00~23:59’59 (after 60 minutes)
Measuring unit: 1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, lap/split time
- Countdown timer
Measuring unit: 1 second
Countdown range: 60 minutes
Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
- 5 daily alarms
- Hourly time signal
- Battery level indicator
- Power Saving (display goes blank to save power when the watch is left in the dark)
- Full auto-calendar (to year 2099)
- Button operation tone on/off
- Date/month display swapping
Day display (days of the week selectable in six languages)
- Regular timekeeping
- Analog: 2 hands (Hour, minute (hand moves every 20 seconds))
1 dial (battery level, mode)
- Digital: Hour, minute, second, pm, month, date, day
Accuracy: ?15 seconds per month (with no mobile link function)
Approx. battery operating time:
7 months on rechargeable battery (operation period with normal use without exposure to light after charge)
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
- Size of case : 46.6×49.6×12.9mm
- Total weight : 160g
Introducing new color variations to the lineup of slim G-STEEL GST-B400 models with new, improved designs made possible by a thin module and carbon core guard structure. There is a standard model in this lineup, the GST-B400 with silver color face and resin band.
The GST-B400 is made possible by even further miniaturization of its parts and thinning of its modules without sacrificing any Bluetooth or solar function. Power consumption has also been significantly reduced.
In addition, the carbon core guard structure of this model helps to make it the thinnest of the G-STEEL Series (as of Apr 2021) while maintaining a high level of impact resistance. The thickness from the back cover to the bezel top is only 12.9 mm, which is more than one millimeter less than the GST-B100 model.
In terms of design, the number of button guards has been reduced as much as possible, enabling the use of large stainless steel buttons that are slim yet easy to operate.
The top bezel has been given five different finishes, while the middle bezel has been given four different finishes, which creates an elegant effect and changes the appearance of the texture of the metal depending on the viewing angle.
One-touch 3-fold Clasp
LED light (Super Illuminator)
Digital Chronograph Function
|Case Size Bracket||
|G-shock connected app||
|Carbon Core Guard Structure||
|Battery level Indicator||
Inventory is updated daily, however, you could use the notification feature to be informed when the desired product is back in stock.
As the Authorised distributor for Casio Timepieces in Sri Lanka, all products are genuine.
All Genuine Casio products come with an official green warranty card with a matching serial number. Ensure to check this when making a Casio purchase.
You can change your password in the “Account Details” section of “My Account”. Simply scroll down to Password Change section. You will then be asked to enter both your old and new passwords.
If you can’t remember your password, click “Forgot your password?” on the login screen. You will be asked to confirm your email address and click Reset password. After that, check your inbox for an email with instructions for resetting your password.
Delivery is done free of charge, shipping can vary between 2 to 7 working days depending on location.
We will send you an email/SMS as soon as the item has been shipped. This will include the tracking number. Failing which you could call our hotline and check on the status with your order number.
Payments could be made in the following methods.
1. Credit/debit card payment online.
2. Direct bank transfer.
3. Cash on delivery.
Products once purchased cannot be returned or refunded. In case of a defective product under warranty terms, the same product will be replaced. In case of any issue, we recommend reaching out to us on our hotline to discuss the details before returning the item.