Casio • B640WC-5AV • Vintage

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

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