Features: case/bezel material: resin/stainless steel resin strap quartz movement mineral crystal analog digital display shock resistant led light afterglow (selectable illumination duration) world time 29 time zones (27 cities + coordinated greenwich mean time) 1/100-second stopwatch countdown timer 5 daily alarms hourly time signal full auto-calendar (to year 2039) 12/24-hour format regular timekeeping accuracy: ±30 seconds per month pull/push crown solid case back buckle clasp 100m water resistance approximate size of case : 47.5 x 42.8 x 12.8mm