• G-SHOCK GA-400GB-1A9 analog-digital watch with a bold black and gold colorway, oversized case, large rotary switch control, street-inspired design, and shock-resistant construction.
  • Black and gold G-Shock watch on a reflective surface with a dark background
  • G-Shock watch with black and gold design on a dark background
  • Black and gold watch with 'Protection' text on a dark background
  • Close-up of a black and gold G-Shock watch with visible branding on a dark background
  • Close-up of a black watch strap with buckle on a transparent background
  • Four G-Shock watches in black and gold on a reflective black surface with a dark background.
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CASIO

G-SHOCK GA400GB-1A9

G-SHOCK GA400GB-1A9

$165.00 USD
$165.00 USD $165.00 USD
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G-SHOCK GA-400 Series – Model GA-400GB-1A9

The G-SHOCK GA-400GB-1A9 is a bold analog-digital G-SHOCK that fuses street culture with legendary toughness. Featuring a large rotary switch for intuitive operation, this model stands out with a striking black and gold color scheme inspired by HIP-HOP and B-BOY fashion.

Design Overview

The GA-400GB-1A9 pairs a rugged oversized case with metallic gold accents applied to the case, band, and dial. The combination of basic G-SHOCK black and vivid gold creates a bold, cool, and expressive design. A signature feature of this model is the large rotary switch, allowing fast and intuitive control even while in motion.

Key Highlights

  • Large rotary switch for intuitive operation.
  • Black & gold colorway inspired by street and HIP-HOP culture.
  • Shock-resistant construction.
  • ISO 764 magnetic resistance for added reliability.

Major Features

  • Shock resistant
  • 20 bar (200-meter) water resistance
  • Suitable for extreme sports
  • Casual yet bold design
  • Bright metallic color accents

Specifications

Basic Information

  • Case Size (L × W × H): 55 × 51.9 × 18.3 mm
  • Weight: 70 g
  • Case & Bezel Material: Resin
  • Band: Resin band
  • Construction: Shock Resistant / Magnetic Resistant
  • Water Resistance: 200-meter water resistance
  • Power Supply & Battery Life: Approx. 3 years on SR927W × 2

Exterior

  • Glass: Mineral glass

Watch Functions

World Time

  • World Time: 31 time zones (48 cities + Coordinated Universal Time)
  • Functions: One-touch UTC time zone, daylight saving on/off, home city/world time city swapping

Stopwatch

  • 1/100-second stopwatch
  • Measuring Capacity: 23:59'59.99"
  • Measuring Modes: Elapsed time, split time

Timer

  • Countdown Timer
  • Measuring Unit: 1 second
  • Countdown Range: 60 minutes
  • Start Time Setting: 1 to 60 minutes (1-minute increments)
  • Other: Auto switch to elapsed time measurement after countdown completion

Alarm & Alerts

  • 5 daily alarms (with 1 snooze alarm)
  • Hourly time signal

Lighting

  • LED light
  • Auto light switch
  • Selectable illumination duration: 1.5 seconds or 3 seconds
  • Afterglow
  • Light Color: Amber

Calendar & Accuracy

  • Full auto-calendar: Pre-programmed until the year 2099
  • Accuracy: ±15 seconds per month

Other Features

  • 12/24-hour format
  • Hand shift feature: Hands move out of the way for unobstructed digital display
  • Button operation tone on/off
  • Regular timekeeping:
    • Analog: Hour, minute (hand moves every 20 seconds)
    • Digital: Hour, minute, second, pm, month, date, day

Summary

The G-SHOCK GA-400GB-1A9 is a statement-making analog-digital watch that combines rugged performance with street-inspired aesthetics. Featuring a large rotary switch, magnetic resistance, and 200-meter water resistance, this model is ideal for those who want a bold G-SHOCK that performs as powerfully as it looks.

For more details, visit the official CASIO website here.

Warranty

All our G-SHOCK watches include the official manufacturer’s warranty for peace of mind and long-term protection.

▶︎Processing Time & Shipping Policy

▶︎Refund policy
▶︎We only carry G-SHOCK USA products.
▶︎Unfortunately, we DO NOT ship internationally.

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CASIO G-SHOCK COLLECTION

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Gshock, Casio, Made in Japan

Explore Your Favorite G-SHOCK Watches

Explore our current selection of G-SHOCK watches. If you don’t see your preferred model, check the G-SHOCK USA website, note the model number, and contact us via email or phone(415-567-2400) to place your order. Ask about our special deals!

Please note:

  • We only carry G-SHOCK USA products.
  • Unfortunately, we DO NOT ship internationally.
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Trusted Since 1967

Our owner, Asuka Saito, is certified by both Gemological Institute of America (GIA) and Cultured Pearl Association of America (CPAA), and we also have a GIA-certified appraiser on staff. Asuka is also a color specialist, certified as a TC Color Therapist and Sensational Color.

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