An ultra-thin module encased in carbon fiber makes for a stylish G-STEEL timepiece with the slimmest profile yet. Strong, yet lightweight, the carbon core guard structure absorbs external shocks and retains Bluetooth connectivity and solar power functionality even with smaller components and a thinner module. Measuring just 12.9mm from the back of the case to the top of the bezel, the GST-B400 is over a millimeter thinner than its predecessor .
Basic Information
- Case size (L× W× H) 46.6 × 49.6 × 12.9 mm
- Weight 80 g
- Case and bezel material: Resin / Stainless steel
- Band: Resin Band
- Construction: Shock Resistant, Carbon Core Guard structure
- Water resistance 200-meter water resistance
- Power supply and battery life: Tough Solar (Solar powered)
Smart Phone Link/ App connectivity feature;
- Smart phone Link feature: Mobile link (Wireless linking using Bluetooth®)
- Apps: CASIO WATCHES
Exterior
- Glass Mineral Glass
- Other: Neobrite
Watch Features
World time
- 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
Stopwatch
- 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
Timer
- 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)
Alarm/hourly time signal
-
5 daily alarms
- Hourly time signal
Light
- 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)
Light color
- LED: White
Calendar
- Full auto-calendar (to year 2099)
Mute feature
- Button operation tone on/off
Energy saving feature
- Power Saving (hands stop to save power when the watch is left in the dark)
Battery display/alert
- Low battery alert
Accuracy
-
Accuracy: ±15 seconds per month (with no mobile link function)
Run time
-
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)
Other features
- 12/24-hour format
-
Date/month display swapping:
Day display (days of the week selectable in six languages)Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
- 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
