G-Shock DW-5900UBB-1ER

This watch won't let you down

Whether you’re on patrol, working long shifts or dealing with unpredictable conditions, your watch should be reliable without needing constant attention. That is what the Casio G-SHOCK DW-5900UBB-1 is built for.

No distractions. Just reliability
Shock resistant construction and 200 metre water resistance mean it’s ready for daily wear, impacts and harsh environments. It’s a watch you don’t have to think about, even in demanding situations.

10-year battery life
Powered by a long-life battery, it keeps running for up to 10 years without replacement. No charging, no interruptions, no downtime mid-shift.

Clear when it matters
A bold digital display with Super Illuminator LED backlight ensures you can read the time instantly, even in low-light or night conditions.

Practical, everyday functions
With world time, stopwatch, countdown timer and multiple alarms, you have everything you need to stay on schedule without unnecessary complexity.

Low-profile, matte black finish
The all-black matte design keeps things subtle and professional,blending seamlessly with uniform or everyday wear

Shock Resistance
Built to handle knocks, drops and daily wear without compromise.

200m Water Resistance
Reliable performance in rain, wet conditions and full submersion.

10-Year Battery
Long-life power means no charging or frequent battery changes.

LED Backlight
Super Illuminator LED with afterglow for clear visibility in low light.

World Time
29 time zones (48 cities) with daylight saving adjustment.

Stopwatch & Timer
1/100-second stopwatch and 24-hour countdown timer for accurate tracking.

Daily Alarms
Five daily alarms with hourly signal and snooze function to keep you on schedule.

Full Auto Calendar
Pre-programmed calendar up to 2099 for accurate date tracking.

Accuracy
Maintains ±15 seconds per month for consistent timekeeping.

Display Options
12/24-hour format with clear digital display for quick readability.

World Time
29 time zones (48 cities) with daylight saving on/off

Stopwatch
1/100-second stopwatch with elapsed, split and 1st–2nd place timing
Measuring capacity: 59 minutes 59.99 seconds

Timer
Countdown timer up to 24 hours
Adjustable from 1 minute to 24 hours

Alarms
5 daily alarms (including 1 snooze alarm)
Hourly time signal

Light
Super Illuminator LED backlight
Selectable duration (1.5 or 3 seconds) with afterglow

Calendar
Full auto-calendar programmed to 2099

Accuracy
±15 seconds per month

Display
12/24-hour format
Hour, minute, second, date and day display

Other Features
Mute function for button tones