Features: - Resin Glass / Spherical Glass - Water Resistant - Case / bezel material: Resin - Resin Band - LED backlight - Afterglow - Dual time Specifications: - 1/100-second stopwatch - Measuring capacity: 23:59'59.99'' - Measuring modes: Elapsed time, split time, 1st-2nd place times - Multi-function alarm (One-time or 7-time snooze) - Hourly time signal - Auto-calendar (to year 2099) - 12/24-hour format - Regular timekeeping: Hour, minutes, seconds, pm, month, date, day - Accuracy: ±30 seconds per month - Approx. battery life: 10 years on CR2025 - Size of case:?44.1?×?40?×?11.5?mm - Total weight: 27.3 g