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 backlight and a 1/100th second stopwatch. This timepiece is the perfect complement to any outfit.

FEATURES: 

• 1/100 second stopwatch (100 hr)
• LED Backlight
• 50M Water Resistant
• Measuring capacity: 59'59.99"
• Measuring modes: Elapsed time, split time, 1st-2nd place times
• Daily alarm
• Hourly time signal
• Auto-calendar (auto-calendar set at 28 days for February)
• 12/24-hour format
• Regular timekeeping
• Hour, minute, second, pm, date, day
• Accuracy: ±30 seconds per month
• Approx. battery life: 7 years on CR2016
• Module: 3454
• Size of case / total weight:  43.1 x 41.2 x 10.5 mm / 63 g