Technology at your fingertips. This sporty G-Shock watch features an array of handy functions set in a sleek black and silver-tone dial.

The GBM2100 series stainless-steel watch. G-SHOCK G-STEEL combines sophisticated style with peace of mind, crafting steel watches with durable shock resistance  water resistance.

Bluetooth® connectivity ensures your GBM2100-1A is always accurate, as this stainless-steel watch automatically updates the time from your smartphone. With auto summer switching for Daylight Savings Time, the sophistication of a stainless-steel G-SHOCK is combined with easy operation, making the sophistication a hands-free experience. Add in the Tough Solar charging, and you have a watch that’s not only tough but reliable for years. 

User manual included

• Silver tone stainless steel case, 49.3mm
• Dial displays digital hour, minute, second, pm, month, date, day
• 2 Hand analog displays hour & minutes
• Mineral crystal lens for scratch resistance
• Black resin band
• Single prong buckle closure
• Double LED Light, backlight for digital display & light for the face (Super illuminator), auto light switch, selectable illumination duration (1.5 or 3 seconds
• Smartphone wireless linking using bluetooth
  
• Connect with Casio App
• Full auto-calendar to year 2099
• World time 38 time zones, 38 cities + coordinated universal time
• Auto summer time switching , home city/world, time city swapping 
• Stopwatch measures elapsed time up to 24 hours in 1/10 second increments
• Stopwatch modes: elapsed time, lap, split time
• Countdown timer range 1 second to 60 minutes in 1 second or 1 minute increments
• 5 Daily Alarms
• Mute button on/off
• 12/24 hour formats
  
• Shock Resistant
• Water resistant to 200 meters
• Solar powered