Nixon designed the Mens 51-30 Chrono Watch to withstand serious punishment and all your aquatic adventures. This watch boasts a 300-meter waterproof rating for ultimate precision under pressure. It also has a one tenth of a second subdial chrono. Nixon gave the 51-30 Chrono Watch a brushed stainless steel band and double locking clasp for durable good looks. The 51-30 has a 6 hand Japanese quartz movement and the case is a custom 300 meter stainless steel with hardened mineral crystal, external rotating bezel with a countdown timer and 9:00 oclock crown position.