• GBA-400-1A9
  • GBA-400-2A
  • GBA-400-4A



Shock-resistant Construction and
200-meter Water Resistance

Original G-SHOCK construction stands up to shocks and vibration like no other. 200-meter water resistance lets you wear it with confidence even at the beach or around the pool.

Approx. battery operating time:
2 years

Since Bluetooth® SMART uses low-power near field communication technology, your function-packed G-SHOCK is able deliver to approximately two years of operation on coin type batteries*. This makes the watch's advanced functions practical for everyday use.

  • * Approximate battery life when mobile link function are used for 2 hours a day.

Mobile Link Functions

  • Music Control
  • Time Adjustment
  • World Time (300 cities)
  • Alarm Settings
  • Timer Settings
  • Hand Home Position Correction
  • Phone Finder
  • Link Loss Alert

Main Specifications

  • Shock resistant (G-SHOCK)
  • LED light (Super Illuminator)
    Selectable illumination duration (1.5 seconds or 3 seconds), afterglow
  • Flash alert
    Flashes with buzzer that sounds for alarms, hourly time signal, countdown timer time up alarm
  • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents
  • Mobile link (Linking with a Bluetooth® SMART device over a wireless connection)
  • Airplane mode
  • World time
    35 time zones (100 cities + coordinated universal time), city name display, daylight saving on/off
  • 1/100-second stopwatch
    Measuring capacity: 999:59'59.99''
    Measuring modes: Elapsed time, split time, 1st-2nd place times
  • Countdown timer
    Measuring unit: 1/10 second
    Input range: 1 seconds to 100 hours (1-second increments, 1-minute increments and 1-hour increments)
  • 5 daily alarms or one-time alarms (with 1 snooze alarm)
  • Hourly time signal
  • Low battery warning (A warning appears on the display whenever battery power drops below a certain level.)
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping
    Analog: 2 hands (hour, minute (hand moves every 20 seconds))
    Digital: Hour, minute, second, pm, month, date, day
  • Accuracy: ±15 seconds per month
  • Approx. battery operating time:
    2 years on SR927W × 2 (Mobile Link used 2 hours a day.)
    *Light: 1 time (1.5 seconds)/day
    *Alarm: 10 seconds/day
  • Size of case / total weight
    55.0 x 51.9 x 18.3 mm / 66 g
  • * Bluetooth is a registered trademark of Bluetooth SIG, Inc.
  • * All other company and product names are trademarks or registered trademarks of their respective owners.