Features: case / bezel material: resin resin strap resin crystal digital display 1/100-second stopwatch light am/pm display 24 hours display daily alarm hourly time signal auto-calendar (28 days for february) regular timekeeping accuracy: ±30 seconds per month day and date display buckle clasp 30m water resistance approximate size of case: 38.2 x 33.2 x 8.5mm nbsp;