Digital Sports Watch Hourly Signal Auto Calendar Stopwatch Water Resistant Black

• Water Resistant, Micro Light
• Daily Alarm, 1/100 second digital stopwatch
• Hourly Time Signal, Auto Calendar, Accuracy: +/-30 seconds per month
• Battery CR2016, Approx. battery life: 7 years
• Size of case / total weight: 37.5 x 33.5 x 9.5mm / 20g