CASIO G-SHOCK GM-2100N-2AJF Navy Metal-Covered Octagonal Analog-Digital Watch

■ Product Overview

The CASIO G-SHOCK GM-2100N-2AJF is a metal-covered analog-digital watch based on the GA-2100 Series and its distinctive octagonal form.

The stainless steel bezel features a blue ion-plated finish, a circular hairline finish on the top surface, and mirror-polished sides. The navy dial uses vapor-deposition treatment to create a metallic appearance.

A textured navy resin band with a graduated square-dot pattern complements the case design. The band also uses a slide-lever system for easier attachment and removal.

Model Number: GM-2100N-2AJF

Module Number: 5611

Release: August 2021

■ Key Features

• GM-2100 Series metal-covered model

• Octagonal stainless steel bezel

• Blue ion-plated finish

• Navy analog-digital dial

• Vapor-deposited dial treatment

• Textured navy resin band

• Shock-resistant construction

• Hand-shift function

• World time for 48 cities

• Double white LED Super Illuminator

• 20 ATM water resistance

• Battery-powered quartz movement

■ Specifications

• Brand: CASIO

• Series: G-SHOCK GM-2100 Series

• Model Number: GM-2100N-2AJF

• Module Number: 5611

• Display: Analog-Digital

• Movement: Battery-Powered Quartz

• Case Size: Approx. 49.3 × 44.4 × 11.8 mm

• Weight: Approx. 72 g

• Inner Case Material: Glass-Fiber-Reinforced Resin

• Bezel Material: Stainless Steel

• Surface Treatment: Blue Ion Plating

• Band Material: Resin / Urethane

• Band Color: Navy

• Glass: Mineral Glass

• Compatible Wrist Circumference: Approx. 145–215 mm

• Water Resistance: 20 ATM

• Other Exterior Feature: Neobrite

• Battery: SR726W × 2

• Battery Life: Approx. 3 Years

• Accuracy: Approx. ±15 Seconds per Month

• LED Color: White

■ Metal-Covered Shock-Resistant Construction

The watch module is protected by a stainless steel bezel and a glass-fiber-reinforced resin inner case.

Small projections on the inner case reduce the contact area with the bezel and help cushion external impacts. This construction provides G-SHOCK shock resistance while maintaining the metal-covered octagonal design.

■ Main Functions

• World time for 48 cities across 31 time zones plus UTC

• Daylight saving time setting

• 1/100-second stopwatch for the first hour

• Stopwatch measuring capacity up to 24 hours

• Elapsed-time and split-time measurement

• First- and second-place time measurement

• Countdown timer with a maximum setting of 24 hours

• Five daily alarms

• Hourly time signal

• Full-auto calendar through 2099

• 12/24-hour time format

• Button operation tone on/off

• Hand-shift function

• Double LED Super Illuminator

• Separate LED illumination for the dial and digital display

• Selectable illumination duration of 1.5 or 3 seconds

• Afterglow function

■ Hand-Shift Function

When the watch hands overlap the digital display, the hand-shift function temporarily moves them away to make the LCD easier to read.

■ Battery Information

This watch uses two SR726W batteries and has an estimated battery life of approximately three years.

Actual battery life varies depending on light use, alarm use, operating conditions, and storage. The factory-installed batteries may have a shorter remaining life than the stated approximate duration.

■ Package Contents

• 1 × CASIO G-SHOCK GM-2100N-2AJF Watch

• CASIO Watch Box

• Instruction Manual

• Warranty Card

Packaging, printed materials, and accessory specifications may vary slightly depending on the production or arrival period.

Display stands, decorations, promotional gifts, and other photography props are not included unless specifically stated.

■ Important Notes

• This is a metal-covered model with a stainless steel bezel. It is not a full-metal watch.

• The inner case and band are made from resin. A stainless steel bracelet is not included.

• This is a battery-powered quartz watch. It is not a Tough Solar model.

• Bluetooth smartphone connectivity and Multiband radio-controlled time reception are not included.

• The 20 ATM rating should not be interpreted as suitability for every water-related activity. Follow the manufacturer’s instructions and avoid diving, hot water, saunas, and high-pressure water exposure.

• Packaging and documents are intended for the Japanese market and may contain Japanese text.

• Manufacturer warranty service outside Japan is not guaranteed.

• Product colors may appear slightly different depending on lighting, photography conditions, viewing angle, and screen settings.