CASIO G-SHOCK GA-B2100C-9AJF Bluetooth Solar Men's Watch Yellow Octagonal Analog-Digital

The CASIO G-SHOCK GA-B2100C-9AJF is a modern evolution of the iconic GA-2100 series, combining the classic octagonal design with advanced Bluetooth connectivity and Tough Solar technology. Finished in a bold yellow color inspired by early G-SHOCK “first color” models, this watch delivers both standout style and everyday functionality.

Built with G-SHOCK’s signature shock-resistant structure and 20BAR water resistance, it is designed to perform reliably in a wide range of environments—from daily wear to outdoor and water activities.

The analog-digital display offers excellent readability, while the smartphone link function allows automatic time adjustment, easy setting, and additional features through Bluetooth connectivity. The Tough Solar system efficiently converts light into energy, reducing the need for battery replacement.

Specifications Movement: Quartz Display Type: Analog-Digital Case Shape: Octagonal Band Color: Yellow Dial Color: Black Band Material: Resin Water Resistance: 20BAR (200 meters) Clasp Type: Buckle

Functions Shock-resistant structure Tough Solar charging system Bluetooth mobile link (smartphone connectivity) Automatic time correction via smartphone World Time (38 cities + UTC, up to approx. 300 cities via app) Hand shift function (hands move to improve digital display visibility) Stopwatch (1/100 sec, 24-hour counter, lap/split) Countdown timer (up to 60 minutes) 5 daily alarms and hourly time signal Battery level indicator Power-saving mode Full auto calendar 12/24-hour format Date display (month/day switchable) Day display (6 languages) Double LED light (dial and LCD with afterglow)

Battery Performance Approx. 7 months operation on full charge (without additional light exposure) Approx. 18 months in power-saving mode

Included Items Watch body Original box Instruction manual with warranty

Additional Information This model maintains the slim and lightweight profile of the GA-2100 series while adding enhanced functionality through solar power and Bluetooth connectivity. Its bold color and versatile features make it an excellent choice for both active lifestyles and everyday wear.