Casio G-Steel [GST-B400-1ADR]

Case size (L×W×H): 46.6 × 49.6 × 12.9  mm
Weight: 80g
Case and bezel material: Stainless steel
Band: Resin Band
Construction: Shock Resistant, Carbon Core Guard structure
Water resistance: 200-meter water resistance

Power supply & battery lifespan:

• Tough Solar (Solar powered)
• 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)

Time adjustment:

• Bluetooth: Connects to a smartphone and automatically adjusts the time

Exterior:

• Glass: Mineral Glass
• Compatible band size: 150 to 205 mm
• Other: Neobrite

Watch Features:

• World time:
  • 38 time zones (38 cities + Coordinated Universal Time), city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping
• 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, split time, 1st-2nd place times
• Timer:
  • Countdown timer
  • Measuring unit: 1 second
  • Countdown range: 24 hours
  • Countdown start time setting range: 1 second to 24 hours (1-second, 1-minute, and 1-hour increments)
• Alarm:
  • 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: White

Calendar: Full auto-calendar (to year 2099)
Mute feature: Button operation tone on/off
Accuracy: ±15 seconds per month (with no mobile link function)

Smartphone Link/App Connectivity Features:

• Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®)
• Apps: CASIO WATCHES
  
• App connectivity feature
  • Auto time adjustment
    
  • Easy watch setting
  • Approximately 300 world time cities
    
  • Time & place
    
  • Reminder
  • Phone finder
    

Other features:

• 12/24-hour format
• Battery level indicator
• 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 (day)
  • Digital: Hour, minute, second, pm, month, date