CASIO G-SHOCK GM-5640GEM-1 40th Anniversary Adventurer's Stone

Created to celebrate 40 years of G-SHOCK, the GM-5640GEM-1 Adventurer’s Stone pays tribute to the raw materials that shaped the brand’s toughness philosophy. Inspired by natural stone formations found in extreme environments, this limited edition features a stone-textured dial — each one unique — symbolizing endurance, pressure, and time itself.

Built on the iconic square G-SHOCK form, and reinforced with a stainless-steel bezel, this anniversary model blends elemental design with modern engineering. A watch that looks forged, not manufactured.

Key Features

• 40th Anniversary Limited Edition — commemorative model celebrating four decades of G-SHOCK toughness
• “Adventurer’s Stone” Dial Design — stone-inspired textured pattern, each dial visually unique
• Iconic Square G-SHOCK Case — direct lineage to the original 1983 design
• Stainless Steel Bezel — added durability with refined industrial finishing
• Shock Resistant Construction — engineered to absorb impacts and survive harsh conditions
• 200 m Water Resistance — built for everyday wear and extreme environments
• Digital Display — clear, functional, and purpose-driven
• Electro-Luminescent Backlight — reliable visibility in low-light conditions

Specifications

• Model: GM-5640GEM-1
• Edition: 40th Anniversary “Adventurer’s Stone” Limited Edition
• Movement: Quartz (Digital)
• Case Material: Resin
• Bezel Material: Stainless Steel
• Band Material: Resin
• Glass: Mineral Crystal
• Water Resistance: 200 m / 20 bar
• Case Size: Approx. 49.6 × 43.2 × 12.9 mm
• Weight: Approx. 73 g
• Functions:
• Digital Timekeeping
• 1/100-Second Stopwatch
• Countdown Timer
• Multi-Function Alarm
• Hourly Time Signal
• Full Auto Calendar
• Electro-Luminescent Backlight

The GM-5640GEM-1 Adventurer’s Stone 40th Anniversary Edition is a reminder that true toughness is shaped over time. With its stone-inspired dial, steel-reinforced square case, and uncompromising G-SHOCK construction, this is a commemorative piece that feels as solid as the legacy it represents.