Straight from the Casio Vintage Collection comes a timepiece that never goes out of style. The B640 combines style with features Casio is known for such as an EL back-light and a 1/100th second stopwatch. This timepiece is the perfect complement to any outfit.
Basic Information
Case size: 38.9 × 35 × 9.4 mm
Weight: 49 g
Case and bezel material: Resin Band
Adjustable Clasp
Stainless Steel Band
Water resistance: 5 ATM
Power supply and battery life
Approx. battery life: 3 years on CR2016
Watch Features
Stopwatch
1/100-second stopwatch
Measuring capacity: 00'00''00 to 59'59''99 (for the first 60 minutes)
1:00'00 to 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
Flashes with buzzer that sounds for alarms, hourly time signal
Light
LED backlight
Afterglow
Light colour
LED: Amber
Calendar
Full auto-calendar (to year 2039)
Accuracy
Accuracy: ±30 seconds per month
Other features
12/24-hour format
Regular timekeeping:
Hour, minute, second, pm, month, date, day
Warranty: 2 Year International Manufacturer's Warranty