Casio watch B640WDG-7

• backlight
• twilight
• flash alert
• Flashes with buzzer that sounds for alarms and hourly time signal
• Stopwatch 1/100 second
• Measuring capacity: 00’00″00~59’59″99 (for the first 60 minutes), 1:00’00~23:59’59 (after 60 minutes)
• measruing unit: 1/100 second (for the first 60 minutes), 1 second (after 60 minutes)
• Measurement modes: Elapsed time, divided time, First and second place times
• the countdown
• measruing unit: 1 sec
• Countdown range: 24 hours
• Countdown start time setting range: From 1 second to 24 hours (one second increments, one minute increments, one hour increments)
• Other: Auto repeat
• Multifunctional alarm
• Hourly time indication
• Full auto-calendar (to year 2039)
• 12/24 hour format
• Regular time setting: Hour, minute, second, pm, month, date, today
• Precision: ±30 seconds per month
• almost. Battery life: 3 years on CR2016
• Display type: Digital
• Disc material type: Metallic
• Box shape: Tonio
• Case material: Resin
• Case Diameter: 35 mm
• Case thickness: 10 mm
• Band Width: 20 mm
• Crystal Material: acrylic
• clasp: Push and slide lock
• Special Features: stopwatch, alarm, light, Countdown timer
• Water resistance depth: 50 metres
• Item weight: 49 grams