Shorthand for the case dimension (51mm) and water-resistance rating (30 bar), the name 51-30 turns out to be code for readable, durable, multifunctional, fun-to-wear watch. The left-sided (destro) mounting of the crown and pushers makes it easier to operate for left-handed wearers and more comfortable for right-handers both weary and wary of 'wrist bite.'Measurements: 51mm case; 25mm band width.Strap/closure: Bracelet strap with deployant clasp closure.Movement: Three-hand quartz movement. Quartz movement: powered by a battery and features an internal electrical circuit to control the rate of the watch's ticking.Complications: Date window; elapsed-seconds, -minutes and -hours subdials.Other features: Water resistant to 30 ATM (300 meters); unidirectional rotating bezel; designed for left-handed wearers; screw-down crown.Face: Mineral crystal face. Stainless steel with goldtone ionic plate Imported