Casio W-219HD-1AVEF Watch The case and strap of the Casio watch are durable polyurethane. The acrylic glass of the watch is slightly curved. Specially designed for those on the water , the watch has special features such as moon phases, tides, sailing timer and many other useful features: Led light Double time Timing (1/100 s accuracy) 5 alarms Snooze Automatic calendar 12/24 hour display The phases of the moon Tide graph Sailing timer Acrylic glass Case material: polyurethane Strap material: polyurethane Waterproof: 100 m Case diameter: 42 mm Casio is a Japanese manufacturer of electronic devices, which is especially known for its high-quality and durable sports watches. Casio watches have versatile features and are suitable for both extreme sports and active everyday life. Casio watches are also popular among conscripts due to their durability and excellent value for money. See all Casio products here