GM-5640GEM-1DR
The Casio G-SHOCK GM-5640GEM-1DR is a special edition model celebrating G-SHOCK’s 40th anniversary. Featuring a striking rainbow-black ion-plated bezel, this timepiece boasts a translucent grey resin band, adding a unique touch to its rugged design. The black printed dial showcases the phrase “SINCE 1983,” honoring the brand’s legacy. A limited edition, it features the 40th anniversary logo engraved on the case back, with four stars on the band loop symbolizing the milestone. With a shock-resistant structure and 200-meter water resistance, it’s built for durability. Additional features include an electro-luminescent backlight, 1/100-second stopwatch, countdown timer, and multi-function alarm. This watch is a tribute to G-SHOCK’s innovative design and heritage.
Case / bezel material: Resin / Stainless steel
Resin Band
Shock Resistant
Mineral Glass
200-meter water resistance
Black ion plated bezel
Rainbow ion plated bezel
Electro-luminescent backlight
Afterglow
Flash alert
Flashes with buzzer that sounds for alarms, hourly time signals
1/100-second stopwatch
Measuring capacity: 00'00"00~59'59"99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit: 1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
Other: Auto-repeat
Multi-function alarm
Hourly time signal
Full auto-calendar (to year 2099)
12/24-hour format
Regular timekeeping: Hour, minute, second, pm, month, date, day
Accuracy: ±15 seconds per month
Approx. battery life: 2 years on CR2016
Size of Case: 49.6 × 43.2 × 12.9 mm
Total Weight: 78 g
