Casio • B640WD-1A • Vintage

• 1/100-second stopwatch • 50-meter water resistance • Popular retro design • LED Backlight

SPECIFICATIONS

• Case size (L× W× H)
  38.9 × 35 × 9.4 mm
• Weight 49 g
• Case and bezel material Resin
• Band Stainless Steel Band Adjustable Clasp
• Water resistance 50-meter water resistance
• Power supply and battery life Approx. battery life: 3 years on CR2016

• Glass Resin Glass
• Compatible band size 150 to 205 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 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 signal
• Light LED backlight Afterglow
• Light color 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