Features: case/bezel material: resin/aluminum resin strap quartz movement mineral crystal digital display electro-luminescent backlight digital compass thermometer world time 31 time zones (48 cities) 1/100-second stopwatch countdown timer 5 daily alarms hourly time signal auto calendar (to year 2099) 12/24-hour display accuracy: ±20 seconds per month regular timekeeping day and date display solid case back buckle clasp 100m water resistance approximate size of case : 50.6 x 45 x 12.8mm