Features: case / bezel material: ion plated stainless steel band mineral glass led light selectable illumination duration, afterglow multi time (4 different cities) world time 1/100-second stopwatch countdown timer measuring unit: 1/10 second alarms 5 independent alarms (one-time or daily) hourly time signal full auto-calendar (to year 2099) 12/24-hour format button operation tone on/off regular timekeeping accuracy: ±30 seconds per month triple-fold clasp 200m water resistance approximate size of case: 52.2 × 47.7 × 16mm