Casio G-Shock GM-5640GEM-1ER "40th Anniversary" (Black / Multi)

Stay on course with the G-SHOCK 40th Anniversary Adventurer's Stone limited edition series. This collection was inspired by the stones that adventurers used for navigation in ancient times. The special colours of the minerals that helped navigators find their way are recreated in the watch designs through forging, ion plating and the covering of individual elements during finishing. This gives each bezel a unique look. The straps are made of coloured or transparent resin and feature a unique structure through hot stamping and Garal colour moulding processes.

• Case size (L x W x H): 49.6 × 43.2 × 12.9 mm
• Weight: 78 g
• Case and bezel material: resin/stainless steel
• Strap: Resin bracelet
• Construction: Shock resistant
• Water resistance: Water resistant to 20 bar
• Power supply and battery life: Approximate battery life: 2 years with CR2016
• Glass: Mineral glass
• Surface treatment: Carbon bezel
• Rainbow coloured ionised bezel
• Compatible strap size: 145 to 215 mm
• Stopwatch: 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
• Timer: Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time Input range: 1 second to 24 hours (in steps of 1 second, 1 minute and 1 hour) Other: Auto repeat
• Alarm/hourly time signal: Hourly time signal, multifunctional alarm
• Flashing signal Flashes with the buzzer of the alarm, hourly time signals
• Illumination: Electroluminescent backlighting Afterglow
• Light colour: EL: blue-green
• Calendar: Fully automatic calendar (up to 2099)
• Accuracy: ±15 seconds per month
• 12/24-hour format: Regular timekeeping: hours, minutes, seconds, 12 hours (pm), month, date, day

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