The GSTB100XA is part of G-Shock's G-Steel series and comes equipped with a unique carbon bezel that is made of lightweight, rigid carbon material that baosts outstanding shock resistance. In addition, the watch features Bluetooth Mobile Link connectivity via the G-SHOCK Connected app that allows you to receive time information from an internet time server, directly to your smartphone.

• Shock resistant
• 200m water resistant
• Solar powered
• LED light (Super Illuminator)
• Afterglow
• Mobile link (Wireless linking using Bluetooth)
• Dual time (Home city time swapping)
• 1-second stopwatch
• Measuring capacity: 23:59'59
• 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)
• Daily alarm
• Battery level indicator
• Power Saving (hands stop to save power when the watch is left in the dark)
• Full auto-calendar (to year 2099)
• Date display
• Day indicator
• 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)
• Accuracy: ±15 seconds per month (with no mobile link function)
• 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)
• dimensions: 58.1 x 53.8 x 14.1 mm
• weight: 185 g