Moon Data, Tide Graph, Negative Display, Super Illuminator LED backlight, Auto light switch, selectable illumination duration, afterglow, flashes with buzzer that sounds for alarms, countdown timer (time up), hourly time signal, World time with 31 time zones (48 cities + coordinated universal time), 1/100-second Stopwatch, Countdown, 5 daily or one-time alarms, Hourly time signal, Full auto-calendar (to year 2099) Item has wear consistent with a used watch, which may include light scratches or scuffing. This watch has some discoloration of the case and band as shown in photos. Buyer is responsible for examining all images carefully before purchase. Water resistance not guaranteed.