Casio G-SHOCK 2100 Series an Analog-Digital Watch - GAB2100-1A

The Casio G-SHOCK GA-B2100-1A adds Tough Solar power and Bluetooth Smartphone Link to the slim octagonal 2100-series design. Its black carbon-and-resin case uses Carbon Core Guard construction, while classic blue, green, and red dial accents recall early G-SHOCK color cues.

Pairing with the CASIO WATCHES app enables automatic time adjustment, simplified watch settings, approximately 300 world-time cities, reminders, time-and-place logging, and phone finder. Core functions remain available on the watch, including world time, a stopwatch, countdown timer, five alarms, hand shift, and double LED illumination.

• Exact model: GA-B2100-1A
• Black case and band with classic multicolor dial accents
• Carbon Core Guard shock-resistant structure
• 200 m / 20 bar water resistance
• Tough Solar charging system
• Bluetooth mobile link with the CASIO WATCHES app
• Carbon and resin case with mineral glass
• Case size: 48.5 x 45.4 x 11.9 mm
• Weight: 52 g
• World time for 38 time zones on the watch and approximately 300 cities through the app
• 1/100-second stopwatch, 60-minute countdown timer, and five daily alarms
• Hand shift and double LED Super Illuminator
• Approximate seven-month operation after a full charge without light under stated normal-use conditions

Bluetooth features require a compatible phone, supported operating system, and current CASIO WATCHES app. This watch is not a dive computer and does not measure depth or calculate decompression, ascent rate, or gas exposure. Follow Casio's water-use instructions and use dedicated scuba instruments when diving.