Description
- Brand: Casio G-Shock
- Series: Digital
- Reference: DW-6640RE-1
- Shock resistant (G-SHOCK)
- 200 meter water resistant
- Electro-luminescent backlight Afterglow
- Flash alert Flashes with buzzer that sounds for alarms, hourly time signal
- 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: Elapsaed 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
- Module: 3230
- Size of case / total weight
- GM-6900 53.9 x 49.7 x 18.6 mm / 96 g
Features
Gender: Men
Movement: Digital
Band Material: Rubber
Case Shape: Octogonal
Case Size: 53.9
Care Guide
How to Care for Your WatchRead the manual: Each watch has specific care instructions — follow them to avoid damage.Keep it clean: Wipe with a soft cloth; use a soft toothbrush with water only. Avoid chemicals.Store properly: Keep your watch in a cool, dry place. Use a watch box or roll. Avoid heat and sunlight.Service regularly: Follow brand recommendations for maintenance to keep accuracy and performance.Wind it: Wear or wind mechanical/automatic watches regularly; use a watch winder if needed.Be gentle: Avoid shocks, drops, and rough activities — remove your watch when active.Professional cleaning: A polish can restore shine and remove scratches.Know water resistance:• 30m: Splashes only• 50m: Showering/light swimming• 100m: Swimming/snorkeling• 200m: Recreational scuba• 500m+: Professional divingDon’t press buttons underwater unless the watch is built for it.
Shipping & Returns
Express Shipping: Orders placed by 2 PM ship within 48 hours (subject to availability).Standard Shipping: Free on orders over $75. All orders require 48 hours processing and deliver in 2–7 days.Local Pickup: Available Tuesday–Friday, 10 AM–2 PM. You’ll receive an email when your order is ready. Please call or email to arrange pickup.Please note:– All packages require a signature.– We do not ship to P.O. boxes.ReturnsIf you’re not fully satisfied, returns are accepted within 14 days of delivery in original condition. All returns require approval and a Return Authorization number. A restocking fee may apply.For any questions or updates, email info@gembijou.com.
We are constantly introducing new products to our catalogue in order to provide you with the most options for your new timepiece.