Casio G-Shock GM-2100-1AER

The Casio G-Shock GM-2100-1AER is a rugged and stylish timepiece that embodies the brand's renowned durability and innovative design. This model, part of the iconic G-Shock series, features a modern aesthetic while maintaining the resilience and functionality that G-Shock watches are known for.

Movement:
Type: Quartz
Module: 5611
Accuracy: ±15 seconds per month
Battery Life: Approximately 3 years on SR726W

Case:
Material: Stainless steel bezel with resin case
Diameter: 44.4 mm
Thickness: 11.8 mm
Lug-to-Lug: 49.3 mm
Case Shape: Octagonal
Finish: Brushed and polished
Crystal: Mineral glass
Crown: N/A (button-operated functions)
Case Back: Screw-down

Dial:
Color: Black with a textured finish
Markers: Applied indices with luminescent coating
Hands: Baton-style with luminescent filling
Display: Analog-digital combination with subdials and digital windows

Bezel:
Type: Fixed
Material: Stainless steel

Strap:
Material: Resin
Width: 22 mm
Clasp: Buckle

Water Resistance:
Rating: 200 meters (20 bar)
Suitable For: Professional marine activity, serious surface water sports, and diving

Functions:
World Time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off, home city/world time city swapping
Stopwatch: 1/100 second stopwatch, measuring capacity: 00'00"00~59'59"99 (for the first 60 minutes), 1:00'00~23:59'59 (after 60 minutes)
Countdown Timer: Measuring unit: 1 second, countdown range: 24 hours, countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Alarm: 5 daily alarms (with 1 snooze alarm)
Hourly Time Signal
Full Auto-Calendar: To the year 2099
12/24-Hour Format
Button Operation Tone On/Off
LED Light: Super Illuminator (double) with afterglow, selectable illumination duration (1.5 seconds or 3 seconds)

Additional Features:
Shock Resistant: Designed to withstand mechanical shock and vibration
Magnetic Resistance: Compliant with ISO 764 standard
Luminous Hands and Markers: For enhanced visibility in low-light conditions
Double LED Light: Ensures the dial and digital displays are easily readable in the dark

The Casio G-Shock GM-2100-1AER is a perfect blend of toughness and elegance. Its robust construction, advanced features, and sleek design make it an excellent choice for both everyday wear and extreme adventures. This watch is engineered to endure the harshest conditions while maintaining a sophisticated look, proving that durability and style can coexist harmoniously.