100 meter water resistant

Auto LED Light with Afterglow

World Time 29 time zones (48 cities + UTC), city code display, daylight saving on/off

4 Daily Alarms and 1 Snooze Alarm

Hourly time signal

1/1000 Second Stopwatch Measuring capacity: 99:59’59.999” Measuring modes: Elapsed time, lap time, split time Others: Speed (0-1998 units/hour), Selection distance input (0.0-99.9)

Countdown Timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) Other: Auto-repeat

Button Operation Tone On/Off

Auto-calendar (pre-programmed until the year 2099)

12/24 Hour Formats

Accuracy: +/-30 seconds per month

Battery: CR1220

Approx. battery life: 3 years

Module: 5165

Size of case/total weight EFA131PB 50.3 x 46.0 x 12.5mm / 85g EFA131BK 50.3 x 46.0 x 12.5mm / 185g

Warranty: 1 year by Casio.