Size chart
Casio G-Shock GA-100-1A4ER
CAGA-100-1A4ER
The Casio G-Shock GA-100-1A4ER is a bold, oversized model from the GA-100 lineup, featuring striking red highlights. With shock resistance, anti-magnetic construction and a 1/1000-second stopwatch, it is designed for demanding environments and active users. The analog-digital layout delivers both rugged style and high functionality.
Key Features
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Auto LED light activated by wrist motion
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Shock-resistant construction
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Anti-magnetic structure
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World time (29 zones)
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Stopwatch 1/1000 sec up to 100 hours
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Timer 1 min up to 24 hours with auto-repeat
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5 daily alarms
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Snooze function
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Speed measurement
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Automatic calendar
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12/24-hour format
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Mineral glass
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Resin case
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Resin strap
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Buckle closure
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Battery life approx. 2 years
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Water resistance 20 bar (ISO 22810)
Technical specifications
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Size 55.0 × 51.2 × 16.9 mm
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Weight approx. 70 g
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Case resin
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Strap resin
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Glass mineral
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Water resistance 20 bar
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Battery CR1220
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Battery life approx. 2 years
SKU
CAGA-100-1A4ER
Keywords
Casio, G-Shock, GA-100, red accents, shock resistant, antimagnetic, 20 bar WR, resin strap, analog digital sports watch