With the rugged looking W735 series, Casio re-introduces the vibration alarm, a function that is useful where discretion is required or in loud environments where audible alarm signals could be missed. The watch also includes a 10-year battery, is 100-meter water resistant and has a high-brightness LED light. All this and additional functionality provide great value for those who work hard and play harder. Black resin band, digital with neutral face. - 51.4 × 47.1 × 16.1mm Case Size - 50g Weight - Resin Band - 100 Meters Water Resistant - Approx. battery life: 10 years on CR2032 - Resin Glass - World time - Dual time - Stopwatch - Timer - Alarm/hourly time signal - LED backlight (Super Illuminator) - Calendar: Full auto-calendar (to year 2099) - Accuracy: ±30 seconds per month - 12/24-hour format - Regular timekeeping: Hour, minute, second, pm, month, date, day - Vibe alert (daily alarm, hourly time signal, countdown timer time up, stopwatch auto start countdown)