CASIO G-SHOCK GM-S5640GEM-7JR 40th Anniversary Limited Edition Downsized Adventurer’s Stone Series Watch

Product Overview

The GM-S5640GEM-7JR celebrates the 40th anniversary of G-SHOCK’s legendary toughness with a special limited edition that combines refined design and advanced durability. This downsized model features a unique metal bezel finished with IP painting and masking technology to express a brilliant, mineral-like texture — a tribute to the adventurer’s guiding stones concept. The skeleton band with hot stamping adds a distinct tactile feel, making the watch a true collector’s item.

Commemorative design details include the dial inscription "SINCE 1983," the iconic 40th anniversary logo by renowned designer Eric Haze, and a star-engraved ring symbolizing the milestone. Compact yet robust, this model perfectly blends heritage, style, and functionality.

Key Specifications

• Model: GM-S5640GEM-7JR

• Water Resistance: 20 ATM (200 meters)

• Case Size: 43.8 × 38.4 × 10.9 mm

• Weight: 50.0 g

• Warranty: 1-year domestic manufacturer warranty

• Accessories: Casio original box and instruction manual included

Major Features

• Stopwatch: 1/100-second precision (under 1 minute) and 1-second precision (over 1 minute), with 24-hour max, split time function

• Countdown Timer: Up to 24 hours, adjustable in 1-second increments, auto repeat function

• Alarms: Multiple daily alarms and hourly time signal

• Calendar: Fully automatic calendar with leap year correction (no manual date adjustment needed)

• Display: 12/24-hour time format switching

• Backlight: EL backlight with afterglow for easy reading in the dark

• Flash Notification: Flashing alert linked to alarms, hourly signals, and timers

Design & Collectability

• Limited edition 40th Anniversary model with exclusive commemorative markings

• IP painted metal bezel with mineral-inspired brilliance

• Skeleton resin band featuring hot stamping for unique texture

• Dial marked "SINCE 1983" and 40th anniversary logo by Eric Haze

• Star engraving on bezel ring representing the “40” milestone