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An elegant, solar-powered G-Shock that’s ready for any adventure under the sun

The process of selecting a watch can often feel like an exercise in weighing trade-offs. Go with a classic analog timepiece, and you’ll give up the stopwatch, timer, and alarms. Go with a digital that stores dozens of split times, and it might seem too casual for the office or nights out. And the options that link to your smartphone, while useful, almost always need to stay within reach of a charger. That’s why we love this new GA-B2100. It compresses all the functionality you’d want from a Bluetooth-connected digital watch into an elegantly simple analog silhouette with all of the toughness G-Shock is known for. Plus, it runs on a solar-power battery so you never have to worry about running out of time.

  • A classic G-Shock shape that blends the elegance of an analog dial with advanced digital features
  • Shock resistance, high-strength resin, and durable mineral-glass crystal means it’s ready for any adventure
  • Battery charges from solar energy and will run for seven months without exposure to light
  • Bluetooth connectivity keeps your time accurate, updating it when there are shifts in daylight savings or when you travel to another time zone
  • Stopwatch feature measures and stores elapsed time and split time in 1/100-second increments up to 60 minutes and 1-second increments up to 24 hours
  • Countdown feature operates in 1-second increments up to 24 hours
  • Allows you to set up to 5 daily alarms for managing tasks and reminders
  • 200-meter water resistance makes it safe for showering, swimming, or surfing
  • Super illuminator LED backlight with Afterglow enables you to read it clearly in low-light situations
  • Case and Bezel: Resin
  • Case Guard: Carbon
  • Band: Resin
  • Crystal: Mineral glass
  • Made in Japan
Product Specifications
Digital Function Time, month, day, date
Analog Function Time, day
Size of Case 48.5 mm x 45.4 mm x 11.9 mm
Total Weight 52 g
Shock Resistant Yes
Water Resistance 200 m
World Time 38 time zones (38 cities + coordinated universal time); daylight saving on/off; home city/world time city swapping
Stopwatch 1/100-second increments to 60 minutes; 1-second increments after 60 minutes
Measuring Modes Elapsed time, split time
Countdown Timer 1-second increments to 24 hours
Alarms 5 daily alarms, hourly signal (adjustable)
Calendar Full auto to year 2099
Mobile Link Bluetooth® automatic connection
Accuracy ±15 seconds per month without mobile link function; automatic time adjustment with mobile link
Illumination Double LED light
Face LED Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Digital Backlight LED Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow
Power Source Solar
Rechargeable Battery Life 7 months of normal use without exposure to light; 18 months when stored in total darkness with the power-save function on

Email us at [email protected] for sizing guidance or other questions.

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