The DX3 PRO-GUARD offers classic design, a U.S. Patented durable fiber reinforced poly-resin case and a long list of performance features?. Including the U.S. Patented Pro-Guard protective case cover that provides additional shock, impact and scratch resistance (cover is removable for cleaning and watch can be worn without it), hardened mineral glass crystal, offset ergonomic crown, long lasting all-metal precision movement, 4 year battery, U.S. Patented heavy-duty DX3 Zulu B-TYPE nylon webbing band, and Swiss Super Luminous hands & markers.