Features: case/bezel material: resin resin strap quartz movement mineral crystal digital display electro luminescent backlight shock resistant flash alert low temperature resistant world time moon data tide graph 1/100 second stopwatch countdown timer 5 multi-function alarms hourly time signal full auto calendar 12/24 hours display screwed case back buckle clasp 200m water resistance approximate case size of case: 53.2 × 50 × 17.7mm