Seiko original nylon strap fits with a variety sport, outdoor and military watches. Shown here in black, this 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.