Casio G-Shock CLASSIC GA-2100LXB-1A9ER

The LUXE BLACK line reinterprets the iconic 2100 series with an essential, modern, and sophisticated design. The matte black dial with a finely textured finish reduces reflections and enhances the subtle hour and minute hands and indices with gold vapor deposition treatment, creating elegant metallic contrasts.

The black resin bezel and strap complete the minimalist and timeless aesthetic, maintaining the iconic G-SHOCK toughness.

Technical Specifications

Case

Dimensions: 48.5 × 45.4 × 11.8 mm
Weight: 51 g
Case and bezel material: Carbon and bio-based resin
Structure: Shock-resistant, Carbon Core Guard structure
Water resistance: 20 bar (200 meters)

Power Supply

Battery: 2 × SR726W
Battery life: Approximately 3 years

Strap

Material: Bio-based resin
Adjustment range: 145 to 215 mm

Glass

Type: Mineral glass

Luminosity

Neobrite: Present

World Time

Time zones: 31 time zones, 48 cities plus UTC
Functions: Daylight saving time on/off

Stopwatch

Type: 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
Measuring unit: 1/100 second for the first 60 minutes; 1 second after 60 minutes
Measuring modes: Elapsed time, split time, 1st-2nd place times

Timer

Type: Countdown timer
Measuring unit: 1 second
Maximum range: 24 hours
Start time setting range: 1 second to 24 hours, in 1-second, 1-minute, and 1-hour increments

Alarms and Signals

Sound reminders: 5 daily alarms
Hourly time signal: Present

Illumination

Type: Double Super Illuminator LED light
Dial light: Selectable duration of 1.5 or 3 seconds, with afterglow
Digital display backlight: Super Illuminator, selectable duration of 1.5 or 3 seconds, with afterglow
LED color: White

Calendar

Type: Full auto-calendar up to the year 2099

Mute Function

Button operation tone on/off: Present

Accuracy

Accuracy: ±15 seconds per month

Timekeeping

Format: 12/24-hour format
Analog: 2 hands for hour and minute, with the minute hand moving every 20 seconds; 1 dial for the day
Digital: Hour, minute, second, PM, month, and date
Hand shift feature: Hands move automatically to avoid obstructing views of digital display contents.