In contrast to machine sewing, the handstitched or saddler's seam uses only a single thread, which is drawn manually from one side to the other with two needles alternately. This creates a particularly even stitch pattern. It takes approximately 40 minutes to produce such a seam, which gives a watch strap a longer service life compared to machine stitching. An exact hand seam requires all the skill of a master leather artisan and thus represents a piece of the finest craftsmanship.