GST-B500D-1A

Basic Information
Case Dimensions (L × W × H): 46.6 × 48.9 × 12.8 mm
Weight: 143 g
Case and Outer Frame Material: Resin/stainless steel
Band: Stainless steel band with one-touch fold-over clasp
Construction: Carbon Core Guard structure
Shock Resistance
Water Resistance: Water-resistant up to 20 bar
Power Source and Battery Life: Tough Solar (powered by solar energy)

Smartphone Link/ App Connectivity Features:
Smartphone Link
Mobile Link (wireless connection via Bluetooth®)
Apps: CASIO WATCHES
App Connectivity Feature:
- Automatic time adjustment
- Easy watch settings
- Times for approximately 300 cities worldwide
- Time and Place reminder
- Phone finder

Exterior:
Glass: Mineral glass

Functions:
World Time:
- 38 time zones (38 cities + coordinated universal time)
- Display of city code and city name
- Daylight Saving Time (DST) on/off
- Automatic DST switching
- Switching between city time and world time

Stopwatch:
- 1/100-second stopwatch
- Measuring capacity: 00'00''00 to 59'59''99 (for the first 60 minutes)
1:00'00 to 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, split time

Timer:
- Countdown timer
- Unit of measurement: 1 second
- Countdown range: 60 minutes
- Countdown start time setting range: 1 second to 60 minutes (1-second and 1-minute increments)

Alarm/Hourly Time Signal:
- 5 daily alarms
- Hourly time signal

Illumination:
Dual LED light sources
- LED light for the watch face (Super Illuminator, selectable illumination duration: 1.5 or 3 seconds, afterglow)
- LED backlight for the digital display (Super Illuminator, selectable illumination duration: 1.5 or 3 seconds, afterglow)
- Illumination color: White

Calendar:
- Fully automatic calendar (up to the year 2099)

Button Operation Tone On/Off
Power Saving Function:
- Energy-saving (the display turns off to save power when the watch is left in the dark)

Battery Indicator:
- Battery level indicator

Approximate Battery Life:
- 7 months on a rechargeable battery (without exposure to light after charging, normal use)
- 18 months on a rechargeable battery (when stored in total darkness with the power-saving function enabled after full charge)

Accuracy:
- ±15 seconds per month (without mobile link function)

Other Functions:
- Hand shift feature (hands move out of the way to provide an unobstructed view of the digital display)
- 12/24-hour format
- Switching between date and month display
- Day display (days of the week selectable in six languages)
- Regular timekeeping: Analog: 2 hands (hour, minute (moves every 20 seconds)), 1 dial (battery level, mode)
Digital: Hour, minute, second, pm, month, date, day.