Casio Watch Model: F-91WC-2A

Product Specifications:

• Water Resistant
• 1/100 second stopwatch 
Measuring capacity: 59'59:99" 
Measuring mode: net time, split time, 1st-2nd place times
• Daily alarm
• Hourly time signal
• Auto-calendar
• 12/24-hour formats
• Micro-light
• Accuracy: ± 30 seconds per month
• Battery: Approx. 7 years on CR2016
• Module 593