Seiko original nylon strap fits with a variety sport, outdoor and military watches. The navy blue, military green, black and beige band is a two-piece watch strap. The band is made of a durable blue nylon material and comes with a heavy matte finish stainless steel buckle.The band edges and sizing holes are heat sealed to ensure that the strap will not unravel. Unisex watch band is available in 18mm. Band Length: 3 3/4" on the buckle side, including the buckle and 5" on hole side. Fits: SNK813, SNK805. -Seiko Watch Strap 18mm Nylon Sport Style Two-Piece Durable Nylon Strap with Stainless Steel Buckle and Lugs Matte Finish - Band Length: 3 3/4" Buckle Side, including Buckle and 5" Hole Side - Fits Seiko Models: SNK813, SNK805 - Heat Sealed Edges and Sizing Holes for Strength -Fits Seiko Models: SNK803K2, SNK805K2, SNK807K2, SNK809K2