Features: case/bezel material: stainless steel resin strap quartz movement mineral crystal blue dial analog digital display led light (super illuminator) world time 1/100 second stopwatch countdown timer 5 daily alarms hourly time signal full auto calendar 12/24 hours display accuracy: ±30 seconds per month luminous hands screwed case back buckle clasp 100m water resistance approximate size of case: 45.1 × 40.3 × 12.4mm