This variation of the Quantus is automatic and winds off the movement of your wrist. Limited Edition to 3000 (made in limited batches) Case size: 43mm Case Material: Two piece curved gunmetal 316L stainless steel Strap Width: 22mm Movement: Modified dual balance wheel, Automatic Mechanical movement made in collaboration with Jinghe Ind. with 40 hour reserve Glass: Uniquely curved sapphire crystal Strap: Carbon fiber leather strap with gunmetal deployant buckle