G-SHOCK GA-2100RRB-4ADR Octagonal Bezel

Indulge your passion for bold, bright toughness with an iconic G-SHOCK style in the vivid red loved by trendsetters and athletes the world over.  

Introducing four iconic styles in G-SHOCK brand red: the ever-popular 5600, a direct legacy of the first-ever G-SHOCK; the 6900, a timeless cultural icon still loved by people of all ages; the 110 with strong, bold oversized case; and the streamlined beauty of the 2100 with octagonal bezel. 

Treated to a vapor deposition finish in red, the watch face blends seamlessly with the red band and bezel, while the dramatic textural contrast exudes strength and intensity. The inverted LCD and touches of black incorporated throughout the design pop against the vibrant red color scheme, the black accents enhancing the impact of the overall design to convey the uniquely tough G-SHOCK identity. 

Key resin components for the bezel and band are made with bio-based resin, a material expected to help reduce environmental impact.  

These vibrant watches make a great accessory for your street-savviest fashions and your most casual styles.

Specifications

Basic Information

• Case size (L × W × H): 48.5 × 45.4 × 11.8 mm
• Weight: 51 g
• Case and bezel material: Carbon / Resin
• Band: Resin Band
• Construction: Shock Resistant, Carbon Core Guard Structure
• Water resistance: 200-meter water resistance

Power Supply and Battery Life

• Battery type: SR726W × 2
• Approx. battery life: 3 years

Exterior

• Glass: Mineral Glass
• Compatible band size: 145 to 215 mm
• Other: Neobrite (glow-in-the-dark coating for better visibility)

Watch Features

World Time

• 31 time zones (48 cities + UTC)
• Daylight saving on/off

Stopwatch

• Measuring capacity:
  • 00'00''00 ~ 59'59''99 (1/100-second)
  • 1:00'00 ~ 23:59'59 (1-second)
• Measuring modes: Elapsed time, split time, 1st-2nd place times

Timer

• Countdown range: 24 hours
• Start time setting: 1 second to 24 hours
  • Increments: 1-second, 1-minute, 1-hour
• Measuring unit: 1 second

Alarms & Time Signal

• 5 daily alarms
• Hourly time signal

Light

• Double LED Light:
  • Face: Super Illuminator (1.5s / 3s with afterglow)
  • Digital display: Super Illuminator (1.5s / 3s with afterglow)
• LED Color: White

Calendar

• Full auto-calendar (to year 2099)

Mute Function

• Button operation tone on/off

Accuracy

• ±15 seconds per month

Other Features

• 12/24-hour format
• Hand Shift Feature: Hands move away to reveal the digital display
• Regular Timekeeping:
  • Analog: 2 hands (hour, minute – moves every 20 seconds), 1 day-of-week dial
  • Digital: Hour, minute, second, PM, month, date