Casio G-Shock GA-2100-1A3ER Utility Black CasiOak Watch

Make a bold statement with the Casio G-Shock GA-2100-1A3ER, a modern take on the iconic G-Shock design featuring stealthy matte black styling with striking neon green accents. Part of the hugely popular “CasiOak” collection, this watch combines the legendary toughness of G-Shock with a slim octagonal case inspired by classic luxury sports watches.

Designed for teenagers and adults, the GA-2100-1A3ER is lightweight, durable and comfortable enough for everyday wear while still offering the rugged performance G-Shock is known for worldwide. Built with Carbon Core Guard technology, the watch delivers exceptional shock resistance in a slimmer profile than traditional G-Shock models.

The hybrid analogue-digital display offers practical features including world time, stopwatch, countdown timer, alarms and double LED illumination, making it ideal for sports, work, travel and outdoor adventures. The neon green detailing on the hands and markers adds a modern streetwear-inspired look while maintaining the clean tactical appearance of the Utility Black Series.

Features:

• Genuine Casio G-Shock GA-2100-1A3ER
• Iconic octagonal “CasiOak” case design
• Matte black finish with neon green highlights
• Carbon Core Guard shock resistant structure
• Lightweight slim-profile construction
• Suitable for teenagers and adults
• Analogue and digital display combination
• Double LED illumination
• World time with 31 time zones
• 1/100 second stopwatch
• Countdown timer
• 5 daily alarms
• Full auto calendar
• Hand shift feature for better digital visibility
• 12/24 hour time format
• Mineral glass protection
• Approx. 3 year battery life
• 200 metre water resistance

Specifications:

• Model: GA-2100-1A3ER
• Case size: 48.5 × 45.4 × 11.8 mm
• Weight: Approx. 51g
• Case material: Carbon / Resin
• Strap material: Resin
• Glass: Mineral glass
• Display type: Analogue-Digital
• Movement: Quartz
• Water resistance: 200 metres
• Battery: SR726W × 2
• Compatible wrist size: Approx. 145–215 mm

The GA-2100 series has become one of the most sought-after modern G-Shock collections thanks to its slim design, lightweight comfort and ultra-durable construction. Often nicknamed the “CasiOak” by fans, it blends rugged functionality with contemporary urban style