CASIO G-SHOCK GM-B2100SD-1CJF

The GM-B2100SD-1CJF takes the iconic CasiOak silhouette and turns the contrast knob way up. Polished stainless steel, a stealth-black dial, and sharp electric-blue accents give this G-Shock a futuristic edge without losing its tool-watch roots. It’s tough, connected, solar-powered — and just flashy enough to get noticed by the right people.

Key Features

• Tough Solar Power — light-charged, long-running, zero battery stress.
• Bluetooth Connectivity — automatic time sync and easy settings via the G-Shock Connected app.
• Full Stainless Steel Case & Bracelet — solid weight, premium finish, serious wrist presence.
• Carbon Core Guard Structure — internal strength without unnecessary bulk.
• Shock Resistance — classic G-Shock toughness baked in.
• 200 m Water Resistance — swims, rainstorms, rough use all cleared.
• Super Illuminator (Double LED) — bright illumination for both analog and digital displays.
• Octagonal “CasiOak” Case Design — modern icon status confirmed.
• World Time (38 Time Zones) — global coverage, no guesswork.

Specifications

• Model: GM-B2100SD-1CJF
• Movement: Quartz (Tough Solar)
• Connectivity: Bluetooth (G-Shock Connected App)
• Case Material: Stainless steel (Carbon Core Guard structure)
• Bracelet / Band: Stainless steel bracelet
• Crystal / Glass: Mineral glass
• Case Diameter: ~44.4 mm
• Case Thickness: ~12.8 mm
• Lug-to-Lug: ~49.8 mm
• Water Resistance: 200 m
• Functions:
• Hours, minutes, seconds
• World time (38 time zones)
• Stopwatch (1/100-second)
• Countdown timer
• 5 daily alarms
• Full auto calendar
• Power-saving mode
• Color / Dial: Black dial with blue accents, silver stainless steel case & bracelet
• Condition: New

Steel-clad toughness, smart connectivity, and a splash of electric attitude — the GM-B2100SD-1CJF is proof that G-Shock can clean up well without going soft