Casio G-Shock G-Steel GST-B500 Lineup Carbon Core Guard Structure Watch GSTB500BD-1A9 GST-B500BD-1A9

Revel in the eclectic G-STEEL combination of metal and resin components in an ever-popular color scheme of black and gold.

Tough construction meets stylish design with metal bezel ion-plated in gold set against a black base. This sophisticated fashion statement with a luxury feel and cool look takes you where you want to go.

Case / bezel material: Resin / Stainless steel
Stainless Steel Band
One-touch 3-fold Clasp
Black ion plated band
Black ion plated bezel
Shock Resistant 
Mineral Glass
Carbon Core Guard structure 
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)
LED:White
Mobile link (Wireless linking using Bluetooth®) 
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
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Battery level indicator 
Full auto-calendar (to year 2099) 
12/24-hour format 
Button operation tone on/off
Power Saving (display goes blank to save power when the watch is left in the dark)
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 × 48.9 × 12.8 mm
Total weight : 143 g