Casio G-Shock Yellow Sports Watch (GA-100A-9)

Casio G-Shock GA-100A-9A (Black & Yellow)

Casio G-Shock GA-100A-9A is a bold, oversized analogue-digital sports watch built for extreme durability and everyday wear. Featuring G-Shock’s legendary shock resistance, JIS Class 1 magnetic resistance, and 200-metre water resistance, this model is designed to withstand tough environments and active lifestyles. With world time, high-precision stopwatch, countdown timer, and a high-contrast black and yellow design featuring analog and digital displays, the GA-100A-9A delivers rugged performance with unmistakable G-Shock style.

Key Specifications

Case size (L × W × D): 55 × 51.2 × 16.9 mm

Weight: 70 g

Case / Bezel Material: Resin

Band: Resin strap (Fits approx. 145–215 mm wrist)

Glass: Inorganic (Mineral) glass

Shock Resistance: G-Shock shock-resist structure

Magnetic Resistance: JIS Class 1

Water Resistance: 200 metres (20 ATM)

Display: Analogue-digital combination

World Time: 29 time zones (48 cities + UTC), daylight saving on/off, home time city switching

Stopwatch: 1/1000-second accuracy, 100-hour counter, speed measurement (MAX 1998 unit/hour), lap/split measurement

Countdown Timer: Up to 24 hours, 1-second increments, auto-repeat function

Alarms: 5 daily alarms (one with snooze) + hourly time signal

LED Backlight: Amber LED with auto-light, selectable afterglow (1.5 sec / 3 sec)

Full Auto Calendar: Pre-programmed until 2099

Date & day display

12/24-hour time format

Battery: CR1220

Battery life: Approx. 2 years

Quartz accuracy: ±15 seconds per month