Material: Resin case and band, mineral glassFeatures: Shock resistant, 200-meter water resistant, magnetic resistant, world time (29 time zones, 48 cities), 1/1000-second stopwatch, countdown timer, 5 daily alarms, hourly time signal, full auto-calendar (to year 2099), 12/24-hour format, LED light (auto light switch, selectable illumination duration), and battery life of approximately 2 years.Care: Avoid exposure to extreme temperatures and harsh chemicals. Clean with a soft, damp cloth.