Casio G-Shock Caution Yellow Watch

The GA-B2100CY-1AER is part of the G-SHOCK "Caution Yellow" collection, inspired by emergency rescue equipment and safety signage. The watch combines the popular octagonal CasiOak design with a bold black-and-yellow colour scheme, Tough Solar charging, and Bluetooth smartphone connectivity. Its slim profile and Carbon Core Guard construction make it both lightweight and exceptionally durable for daily wear, work, travel, and outdoor activities.

Movement

Tough Solar (Solar-Powered Rechargeable Battery)

Bluetooth Smartphone Link

Automatic Time Adjustment via Smartphone

Accuracy: ±15 Seconds per Month (without Bluetooth sync)

World Time: 38 Time Zones / 300+ Cities via App

1/100-Second Stopwatch

Countdown Timer

5 Daily Alarms

Hourly Time Signal

Battery Level Indicator

Power Saving Function

Dial

Analogue-Digital Display

Black Dial with High-Visibility Yellow Accents

Double LED Super Illuminator

Neobrite Luminous Hands

Day, Date and Time Display

Hand Shift Function for Clear LCD Viewing

White LED Backlight with Afterglow

Strap Details

Black Resin Strap

Traditional Buckle Fastening

Comfortable Lightweight Design

Wrist Size Compatibility: 145–215 mm

Durable Resin Construction

Designed for Everyday and Outdoor Use