Casio Mens A178WA-1AUDF Illuminator Retro Digital WatchFeatures:?- 10 Year Battery- Water Resistant- LED Light with Afterglow- Dual Time- Muli-function Alarm with Snooze- 1/100 second digital stopwatch- Measuring capacity: 23:59’59.99″- Measuring modes: Elapsed time, split time, 1st-2nd place times- Hourly Time Signal- Auto Calendar (pre-programmed until the year 2099)- Accuracy: +/-30 seconds per month- Battery CR2025- Approx. battery life: 10 years- Module 2519/3234Specifications:- Size of case: 39.5mm x 32.5mm x 9.8mm- Total weight: 52g