Casio GSTB100XA-1A | G-STEEL Analog Men's Watch

Case size (L× W× H):58.1 × 53.8 × 14.1 mm
Weight:104 g
Case and bezel material:Carbon fiber bezel,Resin / Stainless steel, Carbon
Band:Resin Band
Construction:Shock Resistant
Water resistance:200-meter water resistance
Time adjustment:Bluetooth: Connects to a smartphone and automatically adjusts the time
Power supply and battery life:Tough Solar (Solar powered)

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,Phone finder

Glass:Sapphire crystal with glare-resistant coating
Crown:Screw Lock Crown
Other:Neobrite

World time:Dual time (Home city time swapping)
Stopwatch:1-second stopwatch
Measuring capacity: 23:59
Measuring mode: split time
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Alarm/hourly time signal:Daily alarm
Light:LED light (Super Illuminator)
Afterglow
Light color:LED:White
Calendar:Full auto-calendar (to year 2099)
Energy saving feature:Power Saving (hands stop to save power when the watch is left in the dark)
Battery display/alert:Battery level indicator
Run time:Approx. battery operating time:
5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
24 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Accuracy:Accuracy: ±15 seconds per month (with no mobile link function)
Other features:Regular timekeeping:
Analog: 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day),Date display,Day indicator