• Casio G-SHOCK GA-B2100DF-4A Charles Darwin Foundation collaboration model – inspired by the Sally Lightfoot Crab with vivid red/orange colors, bio-based resin, Tough Solar, Bluetooth Smartphone Link, and Galápagos-themed design details.
  • Two G-Shock watches, one black and one red with orange strap, on a background with Galápagos Islands illustration.
  • Red Casio G-Shock watch with orange strap on a rocky background with crabs
  • Wristwatch with gray and orange bands on a light blue background
  • G-Shock watch in an open orange box with a branded cloth on a gray background
  • Smartphone displaying a G-Shock watch app with a sky background
  • Red G-Shock Casio watch with digital display on a dark background
  • Red and orange Casio G-Shock watch on a white background
  • Orange G-Shock watch with a clear background
  • List of major features with icons and text on a white background
  • Charles Darwin Foundation logo on a light blue background with text about the organization.
  • G-Shock watch with Galápagos Albatross design against a scenic background
  • Watches in branded boxes with Charles Darwin Foundation packaging on a white background
  • G-Shock watch with bio-based resin components on a white background
  • Smartphone displaying a G-SHOCK watch app with a blue sky and sun in the background
  • Red Casio G-Shock watch with digital and analog display on a dark background
1 16

CASIO

G-SHOCK GA-B2100DF-4A : Charles Darwin Foundation Collaboration

G-SHOCK GA-B2100DF-4A : Charles Darwin Foundation Collaboration

$200.00 USD
$200.00 USD $200.00 USD
Sale Sold out
Shipping calculated at checkout.

Casio G-SHOCK 2100 Series – GA-B2100DF-4A

Charles Darwin Foundation Collaboration Model**

The GA-B2100DF-4A is a vibrant collaboration model created with the Charles Darwin Foundation, celebrating the wildlife of the Galápagos Islands. This edition is inspired by the Sally Lightfoot Crab, a colorful and agile crustacean that lives along the rocky shores of the islands.

Built on the GA-B2100 platform, the watch features Bluetooth Smartphone Link, Tough Solar, and eco-conscious bio-based resin material. Its vivid red and orange color palette captures the unique appearance of the Sally Lightfoot Crab, while symbolic artwork pays tribute to the extraordinary ecosystems the Foundation works to protect.

Design Overview

This is the fourth collaboration between G-SHOCK and the Charles Darwin Foundation. Two models make up this partnership: one inspired by the Galápagos Albatross, and this GA-B2100DF-4A inspired by the Sally Lightfoot Crab.

Signature Sally Lightfoot Crab Details

  • Bold red & orange color scheme evoking the crab’s vivid shell

  • Indicator hand depicting the crab raising its claws

  • Band loop with crab graphics

  • Dial features a silhouette of the Galápagos Islands

  • Case back engraved with the Charles Darwin Foundation logo & name

  • Band printed with: “Apoyo la conservación de Galápagos.”
    (“I support Galápagos conservation.” in Spanish)

In keeping with the conservation theme, this model also comes in plastic-free packaging.

Modern G-SHOCK performance, unique wildlife-inspired styling, and meaningful environmental purpose come together in this special model.

Key Highlights

✔ Charles Darwin Foundation collaboration model
✔ Inspired by the Sally Lightfoot Crab
✔ Vivid red/orange color inspired by the crab’s bright shell
✔ Bio-based resin bezel & band (renewable organic materials)
✔ Tough Solar (solar powered)
✔ Smartphone Link (Bluetooth)
✔ Shock Resistant (Carbon Core Guard Structure)
✔ 200-meter water resistance
✔ Double LED (Super Illuminator)
✔ Approx. 7–18 months solar-powered run time

Features & Specifications

Basic Information

  • Case Size: 48.5 × 45.4 × 11.9 mm

  • Weight: 52 g

  • Case / Bezel Material: Carbon / Bio-based resin

  • Band: Bio-based resin band

  • Construction: Shock Resistant, Carbon Core Guard Structure

  • Water Resistance: 200-meter water resistance

  • Time Adjustment: Bluetooth (auto time adjustment via smartphone)

  • Power Supply: Tough Solar (solar powered)

Smartphone Link / App Connectivity

  • Mobile Link: Wireless connection via Bluetooth®

  • Compatible App: CASIO WATCHES

App Functions

  • Auto time adjustment

  • Easy watch setting

  • Approx. 300 world time cities

  • Time & place

  • Reminder

  • Phone finder

Exterior

  • Glass: Mineral Glass

  • Other: Neobrite

  • Compatible Band Size: 145–215 mm

Watch Features

World Time

  • 38 time zones (38 cities + UTC)

  • City code display, city name display

  • Daylight saving (DST) automatic switching

  • Home city / World Time city swapping

Stopwatch

  • 1/100-second stopwatch

  • Measuring capacity:

    • 00'00"00–59'59"99

    • 1:00'00–23:59'59

  • Modes: elapsed time, lap/split

Timer

  • 1-second measuring unit

  • 60-minute countdown range

  • Setting range: 1 second–60 minutes

Alarms

  • 5 daily alarms

  • Hourly time signal

Light

  • Double LED Light (Super Illuminator)

    • LED for face (1.5 or 3 sec)

    • LED for LCD (1.5 or 3 sec)

  • Light Color: White

Calendar

  • Full auto-calendar (to year 2099)

Energy Saving

  • Power Saving (display turns off in darkness to save energy)

Solar Run Time

  • Approx. 7 months (normal use)

  • Approx. 18 months (dark storage with power save)

Other Features

  • Hand shift feature

  • 12/24-hour format

  • Date/month display switching

  • Day display (6 selectable languages)

  • Battery level indicator

  • Accuracy: ±15 sec/month (without mobile link)

  • Regular timekeeping:

    • Analog: hour, minute (moves every 20 sec)

    • Digital: hour, minute, second, pm, month, date, day

Summary

The GA-B2100DF-4A captures the bold personality of the Sally Lightfoot Crab with striking colors and detailed wildlife-inspired artwork. Combined with bio-based materials, Tough Solar, and Bluetooth connectivity, this collaboration model represents both cutting-edge technology and a meaningful commitment to Galápagos conservation.

Perfect for G-SHOCK fans, wildlife enthusiasts, and collectors seeking a timepiece with purpose and personality.

For more details, visit the official CASIO website here.

Warranty

All our G-SHOCK watches include the official manufacturer’s warranty for peace of mind and long-term protection.

▶︎Processing Time & Shipping Policy

▶︎Refund policy

▶︎We only carry G-SHOCK USA products.

▶︎Unfortunately, we DO NOT ship internationally.

View full details

CASIO G-SHOCK COLLECTION

1 12
Gshock, Casio, Made in Japan

Explore Your Favorite G-SHOCK Watches

Explore our current selection of G-SHOCK watches. If you don’t see your preferred model, check the G-SHOCK USA website, note the model number, and contact us via email or phone(415-567-2400) to place your order. Ask about our special deals!

Please note:

  • We only carry G-SHOCK USA products.
  • Unfortunately, we DO NOT ship internationally.
👉See What's Available
Miseki Jewelry Exterior

Trusted Since 1967

Our owner, Asuka Saito, is certified by both Gemological Institute of America (GIA) and Cultured Pearl Association of America (CPAA), and we also have a GIA-certified appraiser on staff. Asuka is also a color specialist, certified as a TC Color Therapist and Sensational Color.

View the certificate