Casio G-Shock DW-6640RE-1DR 40th Anniversary Digital Rubber Strap Watch

Case size (L× W× H): 53.2 × 50 × 18.7 mm
Weight: 71 g
Case / bezel material: Bio-based resin
Bio-based resin band
Construction
Shock Resistant
200-meter water resistance
Battery: CR2016
Mineral Glass
Compatible band size: 145 to 205 mm
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 setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
Other: Auto-repeat
Alarm/hourly time signal
Hourly time signal
Multi-function alarm
Flash alert feature
Flash alert
Flashes with buzzer that sounds for alarms, hourly time signals, countdown timer time up alarm
LED backlight (Super Illuminator)
Afterglow
Light color
LED:White
Full auto-calendar (to year 2099)
Accuracy: ±15 seconds per month
Other features
12/24-hour format
Regular timekeeping:
Hour, minute, second, pm, month, date, day