Shock resistant. Resin band with buckle closure. Waterproof as much as 200 meters. Solar powered. Digital face with electroluminescent backlight. Hourly time signal. 4 day-to-day alarms and 1 snooze alarm. Countdown timer. Auto-calendar pre-programmed till the year 2099. 12/24 hour formats. Accuracy ± 15 seconds a month. 31 time zones (48 towns + coordinated universal time). Moon knowledge and tide graph. Dive time recorder and surface interval measurement. Battery power indicator. Battery life:10 months on rechargeable battery with out exposure to additional daylight.27 months with power save serve as on after full charge.