B640WB-1ADF

Case and bezel material:

Resin

Band:

Stainless Steel Band

Adjustable Clasp

Construction:

NIL.

Water resistance:

50-meter water resistance

Time adjustment:

NIL.

Power supply and battery life:

Approx. battery life: 3 years on CR2016

Glass:

Resin Glass

Surface treatment:

Black ion plated band

Black IP

World time:

NIL.

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