Features: case/bezel material: resin resin strap quartz movement resin crystal digital display chronograph function led light daily alarm 1/100-second stopwatch hourly time signal auto-calendar (set at 28 days for february) 12/24-hour formats regular timekeeping accuracy: ±30 seconds per month day and date display solid case back buckle clasp 100m water resistance approximate size of case: 38.2 x 35.2 x 8.5mm