Casio B640WB-1ADF

Features

• 50-meter water resistance
• LED backlight
• 1/100-second stopwatch
• Stainless steel band

Specifications

• Case / bezel material: Resin
• Adjustable Clasp
• Stainless Steel Band
• Resin Glass
• Black ion-plated band
• 50-meter water resistance
• LED Backlight
  Afterglow
• Flash alert
  Flashes with buzzer that sounds for alarms, hourly time signal
• 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
• 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
• Multi-function alarm
• Hourly time signal
• Full auto-calendar (to the year 2039)
• 12/24-hour format
• Regular timekeeping: Hour, minute, second, pm, month, date, day
• Accuracy: ±30 seconds per month

Size of case / Total weight

• Size of case: 38.9 × 35 × 9.4 mm
• Total weight: 49g