Casio GA-2100-1A3ER G-Shock Mens Watch Unisex Watch 45mm 20ATM

The Casio G-Shock GA-2100-1A3ER combines G-SHOCK’s legendary toughness with a sleek, modern design. Part of the popular 2100 series, also known as the CasiOak, this model features a distinctive octagonal bezel, slim profile and striking black dial with vibrant green accents.

Built with Casio’s innovative Carbon Core Guard structure, the watch offers excellent shock resistance while remaining lightweight and comfortable for everyday wear. Its analogue-digital display combines classic styling with practical functionality.

With 200-metre water resistance, world time, stopwatch and countdown timer, the GA-2100-1A3ER is ready for everyday adventures.

Key Features

• • Shock-resistant construction
  • Carbon Core Guard structure
  • 200m (20 bar) water resistance
  • Analogue-digital display
  • World time – 31 time zones / 48 cities
  • 1/100-second stopwatch
  • 24-hour countdown timer
  • 5 daily alarms
  • Double LED Super Illuminator
  • Hand shift feature
  • Full auto-calendar
  • 12/24-hour format
  • Approx. 3-year battery life