B640WC-5A

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

- Case / bezel material: Resin

- Stainless Steel Band

- Adjustable Clasp

- Resin Glass

- Partial ion plated

- 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 year 2039)

- 12/24-hour format

- Regular timekeeping: Hour, minute, second, pm, month, date, day

- Accuracy: ±30 seconds per month

- Approx. battery life: 3 years on CR2016

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