Casio Retro Digital Watch A159WA-N1DF Features: - Water Resistant - Micro Light - Daily Alarm - 1/100 Second digital stopwatch - Measuring capacity: 59'59.99 - Measuring modes: Net time, split time, 1st-2nd place times - Hourly Time Signal - Auto Calendar - Accuracy: +/-30 seconds per month - Battery CR2016 - Approx. battery life: 7 years - Module 593 - Size of case: 37.5mm x 33.5mm x 9.5mm - Total weight: 58g