CASIO G-SHOCK GA-2100-1AJF Carbon Core Analog-Digital Watch

Product Overview
The CASIO G-SHOCK GA-2100-1AJF is a sleek, ultra-tough analog-digital watch built with G-SHOCK’s advanced Carbon Core Guard structure. Combining a minimal matte black aesthetic with high-performance features, this model is engineered for modern lifestyles—whether you're commuting, adventuring, or training.

Key Features

• Carbon Core Guard Structure
  Lightweight resin case reinforced with carbon fiber for enhanced shock resistance and durability.

• Analog-Digital Dual Display
  Easy-to-read layout featuring both analog hands and digital screens for flexible timekeeping.

• World Time

  • 48 cities across 31 time zones + UTC

  • Includes daylight saving time (DST) and home city/world city swap

• Stopwatch & Timer

  • Stopwatch:
    1/100-sec (for <1 hour), 1-sec (for ≥1 hour), up to 24 hours total with split time

  • Countdown Timer:
    Adjustable up to 24 hours in 1-second units

• Double LED Light (Super Illuminator)

  • White LED for both analog and digital areas

  • Auto light with selectable afterglow (1.5 or 3 seconds)

• Alarms & Signals

  • 5 daily alarms + hourly time signal

  • Operation sound ON/OFF switch

• Hand Shift Function

  • Temporarily moves hands away to ensure clear view of digital display

• Calendar & Time Format

  • Fully automatic calendar (pre-set through 2099)

  • 12/24-hour format switching

• Quartz Movement

  • Timekeeping Accuracy: ±15 seconds per month

Specifications

• Model: GA-2100-1AJF

• Color: Matte Black

• Display: Analog-Digital

• Water Resistance: 200 meters (20 ATM)

• Case Size: 48.5 × 45.4 × 11.8 mm

• Weight: 51.0 g

• Case / Bezel / Band: Resin

• Glass: Mineral (scratch-resistant)

• LED Color: White

What’s Included

• Casio branded box

• Instruction manual