​At A Glance

G-SHOCK offers the first G-STEEL lineup models featuring chronograph performance in analog format. The dial at 9 o’clock has a multi-functional rotating disk that is cut to resemble the thick blades of a jet engine. These watches are equipped with Bluetooth® that lets them connect with a smartphone at the press of a button, and acquire time information from an internet time server. The result is accurate timekeeping no matter where in the world you happen to be. Other functions include Tough Solar in combination with CASIO original power saving technology for a stable supply of power, high brightness LED light illumination, and dual dial World Time. The GST-B100D comes with a simple stainless steel band.

Features

• G-Steel
• Bluetooth Connected
• Solar Powered
  
  

Specifications

• 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)
• module 5513
• Size of case / total weight
• GST-B100D 58.1 x 53.8 x 14.1 mm / 185 g
• GST-B100 58.1 x 53.8 x 14.1 mm / 101 g