Casio G-SHOCK 2100 Series Dual Display Watch (GA-2100-1AER)

Overview

The Casio G-SHOCK GA-2100-1A combines a tough carbon core guard structure with G-SHOCK’s hallmark shock resistance and 200-metre water resistance. Its clean, low-profile analogue-digital design includes world time, a 1/100-second stopwatch and a countdown timer, making it a versatile everyday watch for work and play. An LED light keeps the display readable in low-light conditions and a full auto-calendar ensures accurate date tracking through the years.

Key Features

• Shock resistant carbon core guard structure
• 200-metre water resistance
• World time (31 time zones, 48 cities + UTC; daylight saving on/off)
• 1/100-second stopwatch (measuring modes: elapsed time, split time)
• Countdown timer with 24-hour range
• Five daily alarms and hourly time signal
• LED light for display illumination
• Full auto-calendar (to year 2099)
• 12/24-hour time formats

Specifications

• Case size (L×W×H): 48.5 × 45.4 × 11.8 mm
• Weight: approx. 51 g
• Colour: Black
• Casio Part Number: GA-2100-1AER
• Case / bezel material: Carbon-reinforced resin / resin
• Band: Resin band; fits wrist sizes approx. 145–215 mm
• Glass: Mineral glass
• Water resistance: 200 m
• Power: CR2016 battery (approx. 3 years)
• Accuracy: ±15 seconds per month

Watch Functions (Detailed)

• World Time: 31 time zones (48 cities + UTC), daylight saving on/off
• Stopwatch: 1/100-second; measuring modes include elapsed time and split time
• Countdown Timer: Measuring unit: 1 second; range: 24 hours
• Alarms: 5 daily alarms; hourly time signal
• Light: LED backlight for easy reading in low light
• Calendar: Full auto-calendar to year 2099

Authorised Casio Retailer

TacTree is an authorised Casio UK retailer. All Casio watches sold are 100% genuine, brand new and supplied directly to us from Casio UK. Each watch is delivered with official Casio packaging, instruction manual and manufacturer warranty, ensuring complete authenticity and peace of mind.