Seiko 5 Green zone Midfield Sports Style This collection has been created with a 36mm case; an ideal size for Field watch fans and traditional Seiko 5 enthusiasts. With the combination of Arabic numbers and different spot and baton markers, Midfield expresses a sports aesthetic enhanced by its durable stainless-steel case and Green zone khaki coloured nylon bracelet. The Seiko 5 Sports 'Field' collection was created with an 'in the field military design taking inspiration from a style originally called a trench watch, created to be robust and reliable in tough conditions echoing the Seiko 5 Sports characteristics. Seiko 5 Sports is known for over fifty years of reliability, durability, performance and value. 5 represents the original five key features of every Seiko 5 still present today: Automatic movement, Day-date display, Water Resistance, Recessed crown and Durable case and bracelet.