This heavy-duty Casio Tide Graph timepiece WS1700H-1A, is the perfect watch for those who love the Ocean. Catch the perfect wave and delve into marine sports with this watch. Designed with a rugged looking case shape and a multi-window face the watch imitate mechanical gears and offers a cool gadget look. This watch comes packed with features and functionality which include a tide graph, moon data, 10-year battery life, and 100 meters water resistance. The perfect watch for those perfectly formed gnarly waves. - 52.5 × 48.6 × 15.2mm Case Size - 48g Weight- Resin Case, Bezel and Band- 100 Meters Water Resistant - Approx. battery life: 10 years on CR2025- Resin Glass- World time- Dual time- Moon Data (moon age of a specific date, moon phase graph)- Tide graph (tide level for specific date and time)- Stopwatch- Timer- Multi-function alarms: 3 independent multi-function alarms (2 one-time alarms and 1 snooze/one-time alarm)*Alarm type: Daily alarm, date alarm, 1-month alarm, monthly alarm- Hourly time signal- LED backlight: Selectable illumination duration (1.5 seconds or 3 seconds), afterglow. - Calendar: Full auto-calendar (to year 2099)- Mute feature: Button operation tone on/off- Accuracy: ±30 seconds per month- 12/24-hour format- Regular timekeeping: Hour, minute, second, am/pm, month, date, day