Resin Band Resin Glass / Spherical Glass Case / bezel material: Resin Dual time Measuring capacity: 23:59’59.99” Measuring modes: Elapsed time. split time. 1st-2nd place times Multi-function alarm (with snooze alarm) 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 Battery: CR2025 Size of case : 44.1x40x11.5mm Total weight : 28g