Casio G-Shock GA-2100 Series – The Iconic "CasiOak" Analog-Digital Watch

Meet the ultimate blend of rugged durability and modern minimalist design. Affectionately nicknamed the "CasiOak" by watch enthusiasts, the GA-2100 series brings the legendary toughness of the very first G-SHOCK (the DW-5000C) into a remarkably slim, contemporary octagonal profile.

Designed for everyday wear, street style, and outdoor adventure alike, this timepiece delivers exceptional versatility without sacrificing performance.

Key Features

• Carbon Core Guard Structure: Encased in a high-rigidity, carbon fiber-reinforced resin case that delivers superior shock resistance while keeping the watch exceptionally lightweight.

• Ultra-Slim Profile: Measuring a sleek 11.8 mm thick, it slips effortlessly under a jacket or shirt cuff—making it one of the most comfortable G-Shock designs available.

• 200-Meter Water Resistance: Built to handle swimming, surfing, heavy downpours, and everyday active wear.

• Analog-Digital Display: Combines traditional sweep hands with a crisp digital sub-display for quick access to calendars, stopwatches, and timers.

• Double LED Light (Super Illuminator): Illuminates both the dial and the LCD display for clear visibility in low-light conditions.

Specifications

• Case / Bezel Material: Carbon / Resin

• Band: Durable Resin Band with pin-buckle closure

• Glass: Mineral Glass

• Case Size: 48.5 × 45.4 × 11.8 mm

• Total Weight: Approx. 51 g

• Battery Life: Approx. 3 years on CR2025

Watch Functions

• World Time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off

• Stopwatch: 1/100-second stopwatch (Measuring capacity: 00'00''00~59'59''99 for the first 60 minutes)

• Countdown Timer: 24-hour countdown range

• Alarms: 5 daily alarms with hourly time signal

• Calendar: Full auto-calendar (up to year 2099)

• Other Features: Hand shift feature (hands move out of the way to provide an unobstructed view of digital displays), 12/24-hour format