Casio G-Shock GA100 Watch
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A Rugged G-Shock Built for Real Use
The Casio G-Shock GA100 pairs a translucent bezel with an original camouflage dial for a look that moves from the outdoors to the street without missing a beat. The monochromatic black and gray face with its translucent accent is a signature of this GA100 style.
What's Inside the GA100
- Case size (L x W x H): 55 x 51.2 x 16.9 mm
- Weight: 72g
- Case and bezel material: resin
- Resin band, compatible band size 145 to 215mm
- Shock resistant and magnetic resistant construction
- 200-meter water resistance
- Mineral glass
- Approx. 2 year battery life on a CR1220
Built for the Water and the Everyday
With 200-meter water resistance and a shock resistant, magnetic resistant build, this watch is made to take a beating whether that means a day on a boat, time in the surf, or just daily wear where a delicate watch would not survive. The resin case and band shrug off saltwater and sun exposure that comes with life near the coast.
Care and Upkeep
The GA100 runs on a replaceable CR1220 battery rated for roughly 2 years, so plan on a battery swap rather than a charge cycle. Rinse the resin case and band with fresh water after saltwater exposure to keep the mineral glass and bezel looking clean.
About G-Shock
G-Shock builds shock resistant military and tactical style watches focused on genuine water resistance and durability, and the GA100 line carries that same shock and magnetic resistant engineering into its camouflage dial design.
Why Shop This at Island Water Sports
Island Water Sports carries G-Shock alongside the surf, boat, and beach gear people actually wear it with, so this watch fits right into a coastal Florida lifestyle from day one.
Free Shipping, No Minimum for IWS Beach Club Members.
Returns are eligible within 30 days of receiving your order. Return shipping labels are FREE for IWS Beach Club Members. See more
Specifications
- Brand
- G-Shock
- Product
- Casio G-Shock GA100 Watch
- Gender
- Female
- Feature
- Case size (L× W× H): 55 × 51.2 × 16.9 mm
- Feature
- Weight: 72g
- Feature
- Case and bezel material: Case / bezel material: Resin
- Feature
- Band: Resin Band
- Feature
- Construction: Shock Resistant Magnetic Resistant
- Feature
- Water resistance: 200-meter water resistance
- Feature
- Power supply and battery life: Approx. battery life: 2 years on CR1220
- Feature
- Glass: Mineral Glass
- Feature
- Compatible band size: 145 to 215mm
Frequently Asked Questions
- Is the G-Shock GA100 waterproof?
- It carries 200-meter water resistance, which covers swimming, surfing, and boating use.
- Is the G-Shock GA100 solar powered?
- No, this GA100 runs on a replaceable CR1220 battery rated for approximately 2 years, not a solar cell.
- What is the GA100 case made of?
- The case and bezel are made of resin, paired with a resin band.
- How long does the battery last on the GA100?
- The battery life is rated at approximately 2 years on a CR1220 cell.
- What band sizes fit the GA100?
- The resin band is compatible with wrist sizes from 145 to 215mm.



