Features: case / bezel material: resin stainless steel band quartz movement resin glass / spherical glass led backlight auto light switch, afterglow telememo dual time 8-digit calculator 1/100-second stopwatch multi-function alarms hourly time signal auto-calendar (to year 2099) regular timekeeping accuracy: ±30 seconds per month triple-fold clasp approximate size of case: 50.4 × 37.4 × 12mm