Features: case/bezel material: resin resin strap quartz movement mineral crystal digital display electro luminescent backlight shock resistant flash alert world time moon data tide graph 1/100-second stopwatch countdown timer multi-function alarms hourly time signal accuracy: ±15 seconds per month day and date display screwed case back buckle clasp 200m water resistance approximate case size of case: 46.7 × 43.2 × 12.7mm