✨ Gift Shop - Find the perfect Christmas gift!

🎄 GIFT SHOP
🎄 GIFT SHOP | SHOP
🎄 GIFT SHOP | GIFT TIPS
🎄 GIFT SHOP | GIFT IDEAS
🎄 GIFT SHOP | Inspiration
Gents
Gents | Movement
Ladies
Ladies | POPULAR BRANDS
Ladies | POPULAR BRANDS I-Z
Ladies | Designer Brands
Ladies | Watch Types
Ladies | Watch colours
Kids
Kids | Brands
Kids | Price ranges
Kids | Types of kids watches
Kids | Colours
Watch straps
Watch straps | Brands
Watch straps | MORE BRANDS
Watch straps | Apple Watch
Watch straps | How to...
Accessories
Accessories | Most sold watch batteries
Inspiration
Inspiration | Inspiration
Inspiration | Watch Trends
Inspiration | Gift tips
New
Sale
Sale | Outlet watches
Sale | Second chance
My order
Contact
All Information
Click for all articles
Adjust watch strap
Change watch strap
Change glass
Clean your watch
Difference butterfly and folding clasp
Maintain metal bracelet
Maintain leather strap
Measure Wrist size
Set time on digital watch
Watch ABC
Water resistance
Click for all articles
Newsletter
Easy payments via Apple Pay
Free delivery on watches above £84

G-Shock G-Steel GST-B400-1AER Watch

  • G-Shock G-Steel GST-B400-1AER Watch

Stainless steel Bluetooth connected gents watch

£290.- Incl 20% vat
● In stock
Compare Error

Colour -

Oops! Something went wrong
  • Free delivery on watches above £84
  • 60-day return period
  • Official dealer of G-Shock
Orders before 17:00 are shipped today!

Product description

Specifications

Alternative article number GST-B400-1A
Ean 4549526303593
Diameter 50 mm
Water Resistant 20 Bar (Dive)
Warranty 2 Year Warranty
Free 1 year extra warranty on Watch.co.uk

Functions

Time hours - Analogue hand - Digital
Calendar Date - Digital
Chronograph and timers Stopwatch /Chronograph - 1/1 seconds, 24 hours - 1/100 seconds 1 hour - Elapsed time - Split times - Lap times
Alarms and notifications Hourly Time Signal
General information
Ean 4549526303593
Brand G-Shock
Series G-Steel
Name G-Steel
Year 2021 Spring / Summer
Display Type Analog - Digital
Swiss Made No
Water Resistant 20 Bar (Dive)
Dial colour Black
Hand colors (h-m-s) White, White
Case information
Case code GST-B400
Diameter 50 mm
Case Thickness 13 mm
Material Stainless steel
Case Shape Round
Case colour Silver
Back case material Stainless steel
Back Case Closed with screws
Material crystal Mineral
Crown Pull crown
Movement information
Movement part nr. 5657 ( See specifications )
Movement Brand Casio
Swiss movement No
Display Type Analog - Digital
Mechanism Solar Quartz
Battery CTL920
Hackable No
Skeletonized No
Strap information
Strap material Resin
Extra info (free text) Stainless Steel Bracelet
Strap width 28 mm
Lug width 14 mm
Strap width at the clasp 20 mm
Strap colour Black
Clasp Type Buckle
Clasp colour Silver
Custom sizing? YES
Mount type Push pins
Straight strap mount No
Suitable for wrist size 160 mm - 230 mm
Original strap Strap G-Shock 10628581

Print & Fit

Wondering how the watch fits your wrist? Use the print and fit function!

Time
hours Analogue hand, Digital
minutes Analogue hand, Digital
Seconds Digital
Time Zones Home city setting, World time
24-HR Indicator AM/PM indicator, Digital choice 12- or 24-hr notation
Automatische aanpassing van de tijd Automatic time adjustment on/off, Smartphone sync
DST-setting Automatic, Manually
Calendar
Date Digital
Day Digital
Month Digital
Auto Calendar Digital, Change day/month order
Chronograph and timers
Stopwatch /Chronograph 1/1 seconds, 24 hours, 1/100 seconds 1 hour, Elapsed time, Split times, Lap times
Timer(s) Countdown Timer 1/1 seconds - 60 minutes
Alarms and notifications
Hourly Time Signal
Sound Alarm(s) 5 daily alarms
Calendar Reminder Via smartphone link
Battery alert Battery level indicator
Lighting
LED lighting Casio Super Illuminator, Double illuminator: Front- and backlight
Other
Multi-language
Button sounds on/off
Manual hand adjustment for analog-digital watch
Hand alignment correction Via smartphone link
Find my phone
Power save mode
Hardware
Shock Resistant
Connectivity
Bluetooth

User experiences

  1. "Schock proof, bluetooth, tough solar, 20 bar"
    "Schock proof, bluetooth, tough solar, 20 bar"
    Marcel · 2 augustus 2025

    Excellent product! I didn't want a smartwatch, but this one is quite advanced. Battery is charged by solar cell, time is automatically synchronised after pairing with phone via bluetooth and if you click the button on your watch (search) your phone makes a sound.

    • Many options
    • Solid
    • Beautiful appearance
    • -

    Uitstekend product ! ik wilde nml geen smartwatch, maar deze is best geavanceerd. Batterij wordt opgeladen door zonnecel, tijd wordt na koppelen met telefoon via bluetooth automatisch gesynchroniseerd en als je op het knopje op je horloge klikt (search) gaat je telefoon geluid maken.

    • Veel opties
    • Degelijk
    • Mooie uitstraling
    • -
G-Shock G-Steel GST-B400-1AER Watch